context: We doubt that Mary dropped the milk. It is probably not the case that Greg is a lion. It is highly unlikely that Lily is a swan.
hypothesis: It is probable that lily is a swan, or Greg is a lion.
valid_hypothesis: It is probably not the case that lily is a swan, or Greg is a lion.
invalid_hypothesis: It is probable that lily is a swan, or Greg is a lion.
hypothesis_assertion: Lily is a swan, or Greg is a lion.