code: def _get_keywords_with_score(extracted_lemmas, lemma_to_word):
      
      keywords = {}
      for score, lemma in extracted_lemmas:
          keyword_list = lemma_to_word[lemma]
          for keyword in keyword_list:
              keywords[keyword] = score
      return keywords
docs: :param extracted_lemmas:list of tuples
      :param lemma_to_word: dict of {lemma:list of words}
      :return: dict of {keyword:score}