context: It is probable that Lily is a rhino. There is little chance that Mary went to the bedroom. It is improbable that Brian is a lion.
hypothesis: It is unlikely that mary went to the bedroom, or Brian is a lion.
valid_hypothesis: It is unlikely that mary went to the bedroom, or Brian is a lion.
invalid_hypothesis: There is a very good chance that mary went to the bedroom, or Brian is a lion.
hypothesis_assertion: Mary went to the bedroom, or Brian is a lion.