context: It is almost certain that Brian is green. It is probable that John discarded the milk. It is certain that Jessica is a sheep. There is a better than even chance that if Brian is green, and Jessica is a sheep, then Fred went to the hallway. It is likely that if either John discarded the milk, or Brian is green, then Mary took the apple. It is improbable that if Jessica is a sheep, or Brian is green, then Lily is a lion.
hypothesis: Chances are about even that john discarded the milk, and Mary took the apple.
valid_hypothesis: There is almost no chance that john discarded the milk, and Mary took the apple.
invalid_hypothesis: Chances are about even that john discarded the milk, and Mary took the apple.
hypothesis_assertion: John discarded the milk, and Mary took the apple.