context: It is unlikely that John went to the bedroom. There is little chance that Greg is a swan. There is little chance that Brian is a frog. There is little chance that if Brian is a frog, and John went to the bedroom, then Mary discarded the apple. We believe that if John went to the bedroom, or Brian is a frog, then Lily is white. There is almost no chance that if either John went to the bedroom, or Greg is a swan, then Fred left the football.
hypothesis: It is unlikely that either Lily is white, or Brian is a frog.
valid_hypothesis: It is unlikely that either Lily is white, or Brian is a frog.
invalid_hypothesis: It is almost certain that either Lily is white, or Brian is a frog.
hypothesis_assertion: Either Lily is white, or Brian is a frog.