text: '''
  Cached words with lemmas that have been looked up before
  Use a dictionary lookup if the word is in cache_dict
  else find the word and add it into the cache_dict
  '''
  import json
  def init():
      global cache_dict
      cache_dict = {}
  def save_synonym_dict():
      with open('./synonym_dict', 'w', encoding = 'utf-8') as f:
          f.write(
              json.dumps(cache_dict,ensure_ascii=False, indent = 2))
  