context: It is highly unlikely that Brian is a lion. There is little chance that Mary went to the bedroom. Chances are slight that Daniel got the milk. It is certain that if Daniel got the milk, or Brian is a lion, then Lily is a frog. It is highly unlikely that if either Mary went to the bedroom, or Brian is a lion, then Greg is a swan. There is a very good chance that if either Brian is a lion, or Mary went to the bedroom, then Bernhard is green.
hypothesis: We believe that either Mary went to the bedroom, or Brian is a lion.
valid_hypothesis: Chances are slight that either Mary went to the bedroom, or Brian is a lion.
invalid_hypothesis: We believe that either Mary went to the bedroom, or Brian is a lion.
hypothesis_assertion: Either Mary went to the bedroom, or Brian is a lion.