<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def most_similar_cosmul(positive: List[str], negative: List[str]):
 """ Word arithmetic operations If a word is not in the vocabulary, KeyError will be raised. :param list positive: a list of words to add :param list negative: a list of words to substract :return: the cosine similarity between the two word vectors """


    return _MODEL.most_similar_cosmul(positive=positive, negative=negative)