context: It is highly unlikely that Lily is a frog. It is unlikely that Brian is gray. It is almost certain that Emily is a cat. We doubt that if Brian is gray, and Emily is a cat, then Greg is a swan. Chances are slight that if Emily is a cat, and Brian is gray, then Julius is a lion. It is probable that if either Brian is gray, or Emily is a cat, then Daniel took the milk.
hypothesis: It is highly unlikely that lily is a frog, or Julius is a lion.
valid_hypothesis: It is highly unlikely that lily is a frog, or Julius is a lion.
invalid_hypothesis: It is highly likely that lily is a frog, or Julius is a lion.
hypothesis_assertion: Lily is a frog, or Julius is a lion.