diff --git a/data/tools/extract-wikidata.py b/data/tools/extract-wikidata.py
new file mode 100644
index 0000000..b83cdb1
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+++ b/data/tools/extract-wikidata.py
@@ -0,0 +1,379 @@
+"""
+Extracts lexicographic data from Wikidata for Unicode Inflection usage
+
+First you need to download the lexicographic data wholesale from Wikidata.
+You can do this by downloading the data from the Web, with either of the
+following two commands.
+
+The first one downloads a specifc version of the data. The following
+command downloads the first version of 2025:
+
+wget -O lexemes.json.bz2 https://dumps.wikimedia.org/wikidatawiki/entities/20250101/wikidata-20250101-lexemes.json.bz2
+
+A list of all available versions can be found on the Web here:
+https://dumps.wikimedia.org/wikidatawiki/entities/
+
+Or you can download the most recent version using the following command:
+
+wget -O lexemes.json.bz2 https://dumps.wikimedia.org/wikidatawiki/entities/latest-lexemes.json.bz2
+
+After that run this script in the dictionary in which the lexemes.json.bz2 file is located.
+The result will be a dictionary_xxx.lst file for the given language.
+Per default the language is 'en', but you can use one of the permitted language code insteads.
+
+== How to add a new language ==
+Find the languages language code, name, and QID (you can use Wikidata for finding all of these).
+
+Add the language in the object code2qid (around line 40) with a mapping from the language code
+to the Wikidata QID for the language.
+Add the language in the list of languages at the beginning of the qid2name object (around line 70)
+with a mapping from the QID to the (English) language name.
+Then run the script for the new language and add all missing QIDs with an identifier for the
+given grammatical feature to the same dictionary until it runs without errors.
+"""
+
+import bz2
+import json
+import sys
+
+linecount = 0
+lexemecount = 0
+languagelexemecount = 0
+formcount = 0
+errorcount = 0
+
+code2qid = {
+  'ar': 'Q13955',
+  'da': 'Q9035',
+  'de': 'Q188',
+  'en': 'Q1860',
+  'es': 'Q1321',
+  'fr': 'Q150',
+  'he': 'Q9288',
+  'hi': 'Q1568',
+  'hr': 'Q6654',
+  'id': 'Q9240',
+  'it': 'Q652',
+  'ja': 'Q5287',
+  'kai': 'Q3438770',
+  'ko': 'Q9176',
+  'ms': 'Q9237',
+  'nb': 'Q25167',
+  'nl': 'Q7411',
+  'pt': 'Q5146',
+  'ru': 'Q7737',
+  'sr':'Q9299',
+  'sv': 'Q9027',
+  'th': 'Q9217',
+  'tr': 'Q256',
+  'uz': 'Q9264',
+  'zh': 'Q7850',
+}
+
+qid2name = {
+  'Q13955': 'Arabic',
+  'Q9035': 'Danish',
+  'Q188': 'German',
+  'Q1860': 'English',
+  'Q1321': 'Spanish',
+  'Q150': 'French',
+  'Q9288': 'Hebrew',
+  'Q1568': 'Hindi',
+  'Q6654': 'Croatian',
+  'Q9240': 'Indonesian',
+  'Q652': 'Italian',
+  'Q5287': 'Japanese',
+  'Q3438770': 'Karai-karai',
+  'Q9176': 'Korean',
+  'Q9237': 'Malay',
+  'Q25167': 'Norwegian Boksmal',
+  'Q7411': 'Dutch',
+  'Q5146': 'Portuguese',
+  'Q7737': 'Russian',
+  'Q9299': 'Serbian',
+  'Q9027': 'Swedish',
+  'Q9217': 'Thai',
+  'Q256': 'Turkish',
+  'Q9264': 'Uzbek',
+  'Q7850': 'Chinese',
+  
+  'Q1084': 'noun',
+  'Q24905': 'verb',
+  'Q63116': 'numeral',
+  'Q576271': 'determiner',
+  'Q34698': 'adjective',
+  'Q4833830': 'preposition',
+  'Q36484': 'conjunction',
+  'Q83034': 'interjection',
+  'Q36224': 'pronoun',
+  'Q102047': 'suffix',
+  'Q134830': 'prefix',
+  'Q161873': 'postposition',
+  'Q7884789': 'toponym',
+  'Q66614509': 'nominal-suffix',
+  'Q9788': 'letter',
+  'Q2865743': 'definite-article',
+  'Q29888377': 'nominal-locution',
+  'Q12734432': 'attributive-locution',
+  'Q2304610': 'interrogative-word',
+  'Q101244': 'acronym',
+  'Q1668170': 'interrogative-adverb',
+  'Q56042915': 'prepositional phrase',
+  'Q187931': 'phrase',
+  'Q468801': 'personal-pronoun',
+  'Q3976700': 'adjectival-suffix',
+  'Q217438': 'demonym',
+  'Q7250170': 'proper-adjective',
+  'Q1964223': 'name-suffix',
+  'Q184511': 'idiom',
+  'Q81058955': 'demonym',
+  'Q1153504': 'interfix',
+  'Q5978305': 'conjunctive-locution',
+  'Q130266209': 'reflexive-personal-pronoun',
+  'Q1527589': 'phrasal-verb',
+  'Q1122269': 'collocation',
+  'Q30515': 'slogan',
+  'Q35102': 'proverb',
+  'Q5': 'human', 
+  'Q10976085': 'verbal-locution',
+  'Q1778442': 'verb-phrase',
+  'Q43369910': 'compound-noun',
+  'Q80071': 'symbol',
+  'Q62155': 'affix',
+  'Q191494': 'digraph',
+  'Q7233569': 'postpositive-adjective',
+  'Q184943': 'grammatical-particle',
+  'Q182990': 'uracil',
+  'Q43229': 'organization',
+  'Q4335462': 'definite-pronoun',
+  'Q10319520': 'interjectional-locution',
+  'Q10319522': 'prepositional-locution',
+  'Q41796': 'sentence',
+  'Q43249': 'morpheme',
+  'Q1167104': 'conjunctive-adverb',
+  'Q10535365': 'infinitive-marker',
+  'Q5456361': 'fixed-expression',
+  'Q357760': 'adjectival-phrase',
+  'Q3257782': 'locution',
+  'Q1787727': 'agent-noun',
+  'Q10265745': 'demonstrative-determiner',
+  'Q8171': 'word',
+  'Q918270': 'initalism',
+  
+  'Q10345583': 'present',
+  'Q110786': 'singular',
+  'Q3910936': 'present',
+  'Q51929074': 'third',
+  'Q1230649': 'past',
+  'Q1392475': 'past',
+  'Q1380802': 'causal-adverb',
+  'Q146786': 'plural',
+  'Q146233': 'genitive',
+  'Q131105': 'nominative',
+  'Q4818723': 'attributive',
+  'Q1931259': 'predicative',
+  'Q2105891': 'possessive',
+  'Q3482678': 'positive',
+  'Q14169499': 'comparative',
+  'Q1817208': 'superlative',
+  'Q122477358': 'double-comparative',
+  'Q65248385': 'comparative-adverb',
+  'Q1861696': 'possessive',
+  'Q30619513': 'abbreviation',
+  'Q21470140': 'possessive',
+  'Q1478451': 'negation',
+  'Q501405': 'future',
+  'Q51929049': 'second',
+  'Q56682909': 'present-indicative',
+  'Q125286251': 'past-indicative',
+  'Q55965516': 'disjunctive-conjunction',
+  'Q8185162': 'lowercase-letter',
+  'Q98912': 'uppercase-letter',
+  'Q102786': 'abbreviation',
+  'Q57156426': 'standalone-form',
+  'Q57156560': 'affixed-form',
+  'Q126473': 'contraction',
+  'Q1233197': 'oblique',
+  'Q5051': 'possessive-determiner',
+  'Q1502460': 'possessive-pronoun',
+  'Q98772589': 'expanded-contraction',
+  'Q953129': 'reflexive-pronoun',
+  'Q59342809': 'alternative-form',
+  'Q3813849': 'indefinite article',
+  'Q1401131': 'noun-phrase',
+  'Q489168': 'noun',
+  'Q332375': 'absolute-adjective',
+  'Q192613': 'present',
+  'Q21714344': 'first',
+  'Q228503': 'uninflected-word',
+  'Q188224': 'mode',
+  'Q1994301': 'past',
+  'Q442485': 'preterite',
+  'Q473746': 'subjunctive',
+  'Q138246': 'plurale-tantum',
+  'Q604984': 'singulare-tantum',
+  'Q38918': 'roman-numerals',
+  'Q179230': 'infinitive',
+  'Q12717679': 'past',
+  'Q3026787': 'saying',
+  'Q8102': 'slang',
+  'Q126897884': 'denominal',
+  'Q682111': 'indicative',
+  'Q22716': 'imperative',
+  'Q181970': 'archaism',
+  'Q380057': 'adverb',
+  'Q96406487': 'short-form',
+  'Q185077': 'vocative',
+  'Q78191294': 'singular-possessive',
+  'Q78191289': 'plural-possessive',
+  'Q147276': 'proper-noun',
+  'Q107614077': 'combining-form',
+  'Q956030': 'indefinite-pronoun',
+  'Q53997851': 'definite',
+  'Q53997857': 'indefinite',
+  'Q1941737': 'modal-adverb',
+  'Q12274060': 'future-in-the-past',
+  'Q1329258': 'cardinal-numeral',
+  'Q1775415': 'feminine',
+  'Q499327': 'masculine',
+  'Q1923028': 'gerund',
+  'Q1240211': 'present-perfect',
+  'Q901711': 'colloquial-language',
+  'Q54310231': 'interrogative-pronoun',
+  'Q1522423': 'locative-adverb',
+  'Q1984758': 'misspelling',
+  'Q117605926': 'perfective-verbal-expression',
+  'Q65048529': 'lowercase-text',
+  'Q12812139': 'technical-term',
+  'Q126729404': 'deverbal',
+  'Q131431824': 'proper-verb',
+  'Q113076880': 'postpositive-adverb',
+  'Q130270424': 'interrogative-expression',
+  'Q2034977': 'prepositional-adverb',
+  'Q5978303': 'adverbial-locution',
+  'Q65280376': 'collocation',
+  'Q106610283': 'adverbial-suffix',
+  'Q65248545': 'superlative-adverb',
+  'Q1774805': 'verb',
+  'Q113198319': 'adverbial-particle',
+  'Q2034977': 'prepositional-adverb',
+  'Q3517796': 'simple-tense',
+  'Q146078': 'accusative',
+  'Q145599': 'dative',
+  'Q1317831': 'active',
+  'Q1775461': 'neuter',
+  'Q7977953': 'weak-inflection',
+  'Q3481903': 'strong-inflection',
+  'Q96407524': 'mixed-inflection',
+  'Q55685962': 'subjunctive',
+  'Q54671845': 'subjunctive-2',
+  'Q101583900': 'alternative-spelling',
+  'Q55228835': 'colloquial',
+  'Q100952920': 'zu-infinitive',
+  'Q623742': 'pluperfect',
+  'Q371427': 'imperfective',
+  'Q625420': 'perfect',
+  'Q54792077': 'prefixoid',
+  'Q358417': 'circumposition',
+  'Q34793275': 'demonstrative-pronoun',
+  'Q1050744': 'relative-pronoun',
+  'Q77768790': 'formal',
+  'Q7188068': 'phrasal-template',
+  'Q52434245': 'present-infinitive',
+  'Q15841920': 'idiom',
+  'Q55698475': 'statal-passive',
+  'Q55698471': 'processual-passive',
+  'Q1424306': 'perfective',
+  'Q210523': 'word-stem',
+  'Q202142': 'locative',
+  'Q192997': 'instrumental',
+  'Q1194697': 'passive',
+  'Q53998049': 'indefinite',
+  'Q51927507': 'animate',
+  'Q51927539': 'inanimate',
+  'Q108524486': 'imperfect',
+  'Q216497': 'aorist',
+  'Q12721117': 'continuous',
+  'Q12547192': 'past-imperfect',
+  'Q545779': 'pejorative',
+  'Q109267112': 'affirmative',
+  'Q23199274': 'affirmation',
+  'Q1234617': 'future-perfect',
+  'Q923933': 'ordinal',
+  'Q904896': 'transgressive',
+  'Q114752182': 'preconsonantal',
+  'Q109371067': 'emphatic',
+  'Q113289507': 'emphatic',
+  'Q3502544': 'past-subjunctive',
+  'Q3502553': 'present-subjunctive',
+  'Q23663136': 'past-perfect',
+  'Q2006180': 'pro-form',
+}
+name2qid = {v: k for k, v in qid2name.items()}
+
+filterpos = [
+  'Q187931', 'Q184511', 'Q9788', 'Q30515', 'Q35102',
+  'Q1401131', 'Q5', 'Q80071', 'Q191494', 'Q182990',
+  'Q43229', 'Q41796', 'Q43249', 'Q5456361',
+  'Q3438770',
+]
+
+dictionary = {}
+
+languagecode = 'en'
+if len(sys.argv) > 1:
+  languagecode = sys.argv[1]
+if languagecode not in code2qid:
+  print('Unknown language code', languagecode)
+  exit(1)
+
+for line in bz2.open('lexemes.json.bz2'):
+  linecount += 1
+  if not line.startswith(b'{'): continue
+  line = line.decode()
+  line = line.strip()
+  if line.endswith(','): line = line[:-1]
+  #print(line)
+  lexeme = json.loads(line)
+  if lexeme['type'] != 'lexeme': continue
+  lexemecount += 1
+  if lexeme['language'] != code2qid[languagecode]: continue
+  languagelexemecount += 1
+  if not languagecode in lexeme['lemmas']: continue
+  # print(lexeme['lemmas'][languagecode]['value'])
+  pos = lexeme['lexicalCategory']
+  if pos not in qid2name:
+    print('***** missing', pos)
+    errorcount += 1
+    continue
+  if pos in filterpos: continue
+  for form in lexeme['forms']:
+  	if not languagecode in form['representations']: continue
+  	word = form['representations'][languagecode]['value']
+  	if word.startswith('-') or word.endswith('-'): continue
+  	if word not in dictionary:
+  	  dictionary[word] = []
+  	if qid2name[pos] not in dictionary[word]:
+  	  dictionary[word].append( qid2name[pos] )
+  	for feature in form['grammaticalFeatures']:
+  	  if feature not in qid2name:
+  	    print('***** missing', feature)
+  	    errorcount += 1
+  	    continue
+  	  if qid2name[feature] not in dictionary[word]:
+  	    dictionary[word].append( qid2name[feature] )
+
+dictionary_file = open('dictionary_' + languagecode + '.lst', 'w')
+for word in sorted(dictionary.keys()):
+  dictionary_file.write(word + ': ' + ' '.join(dictionary[word]) + '\n')
+
+dictionary_file.write('=============================================\n')
+dictionary_file.write('Processed lines: ' + str(linecount) + '\n')
+dictionary_file.write('Processed lexemes: ' + str(lexemecount) + '\n')
+dictionary_file.write('Processed ' + qid2name[code2qid[languagecode]] + ' lexemes: ' + str(languagelexemecount) + '\n')
+dictionary_file.write('Resulting entries: ' + str(len(dictionary.keys())) + '\n')
+dictionary_file.write('Source file: https://dumps.wikimedia.org/wikidatawiki/entities/20250101/wikidata-20250101-lexemes.json.gz\n')
+dictionary_file.write('Transforming file: transform-lexemes-unicode.py\n')
+print('Processed ' + str(languagelexemecount) + ' entries resulting ' + str(len(dictionary.keys())) + ' in dictionary_' + languagecode + '.lst')
+if errorcount > 0:
+  print(str(errorcount) + ' errors')