context: There is little chance that Greg is green. Chances are about even that Daniel dropped the milk. It is impossible that Julius is a frog. It is certain that if Greg is green, and Daniel dropped the milk, then John went to the bedroom. It is almost certain that if either Julius is a frog, or Daniel dropped the milk, then Mary discarded the apple. It is highly unlikely that if either Daniel dropped the milk, or Julius is a frog, then Brian is a lion.
hypothesis: It is highly unlikely that either Brian is a lion, or Daniel dropped the milk.
valid_hypothesis: Chances are about even that either Brian is a lion, or Daniel dropped the milk.
invalid_hypothesis: It is highly unlikely that either Brian is a lion, or Daniel dropped the milk.
hypothesis_assertion: Either Brian is a lion, or Daniel dropped the milk.