context: A man and a woman are out walking their dogs.
hypothesis: There is a very good chance that a man and a woman are out walking their dogs while chatting.
valid_hypothesis: There is a very good chance that a man and a woman are out walking their dogs while chatting.
invalid_hypothesis: We doubt that a man and a woman are out walking their dogs while chatting.
hypothesis_assertion: A man and a woman are out walking their dogs while chatting.