def cut_sent(post, embedding):
    elmo_embedding.embed(sent)

    matrix = []
    for token in sent:
        matrix.append(np.array(token.embedding))
    sent_emb = np.matrix(matrix)

  if len(post.split()) < med:
    pads = np.zeros((med - len(post.split()), 3072))
    return np.vstack((sent_emb, pads))
  else:
    return sent_emb[:med]