context: There is almost no chance that Bernhard is a frog. It is probable that Mary went to the bedroom. It is probable that Lily is green. It is highly unlikely that if either Bernhard is a frog, or Mary went to the bedroom, then Sandra grabbed the milk. It is likely that if Mary went to the bedroom, and Lily is green, then Julius is a rhino. There is almost no chance that if either Bernhard is a frog, or Mary went to the bedroom, then Fred is in the bedroom.
hypothesis: It is impossible that fred is in the bedroom, and Julius is a rhino.
valid_hypothesis: It is impossible that fred is in the bedroom, and Julius is a rhino.
invalid_hypothesis: Chances are about even that fred is in the bedroom, and Julius is a rhino.
hypothesis_assertion: Fred is in the bedroom, and Julius is a rhino.