code: def lemmatise(self, word):
          '''
          Tries to find the base form (lemma) of the given word, using
          the data provided by the Projekt deutscher Wortschatz.  This
          method returns a list of potential lemmas.
  
          >>> gn.lemmatise(u'Männer')
          [u'Mann']
          >>> gn.lemmatise(u'XYZ123')
          [u'XYZ123']
          '''
          lemmas = list(self._mongo_db.lemmatiser.find({'word': word}))
          if lemmas:
              return [lemma['lemma'] for lemma in lemmas]
          else:
              return [wordf lemmatise(self, word):
          '''
          Tries to find the base form (lemma) of the given word, using
          the data provided by the Projekt deutscher Wortschatz.  This
          method returns a list of potential lemmas.
  
          >>> gn.lemmatise(u'Männer')
          [u'Mann']
          >>> gn.lemmatise(u'XYZ123')
          [u'XYZ123']
          '''
          lemmas = list(self._mongo_db.lemmatiser.find({'word': word}))
          if lemmas:
              return [lemma['lemma'] for lemma in lemmas]
          else:
              return [word]
docs: Tries to find the base form (lemma) of the given word, using
          the data provided by the Projekt deutscher Wortschatz.  This
          method returns a list of potential lemmas.
  
          >>> gn.lemmatise(u'Männer')
          [u'Mann']
          >>> gn.lemmatise(u'XYZ123')
          [u'XYZ123']