context: It is unlikely that Brian is yellow. There is almost no chance that Bernhard is a frog. It is probable that Sandra took the apple. It is highly likely that if Bernhard is a frog, or Sandra took the apple, then Lily is white. We doubt that if Bernhard is a frog, and Brian is yellow, then John went to the hallway. There is almost no chance that if Sandra took the apple, or Brian is yellow, then Daniel left the football.
hypothesis: There is little chance that lily is white, and Sandra took the apple.
valid_hypothesis: There is a better than even chance that lily is white, and Sandra took the apple.
invalid_hypothesis: There is little chance that lily is white, and Sandra took the apple.
hypothesis_assertion: Lily is white, and Sandra took the apple.