context: We believe that Julie is in the bedroom. It is likely that Julius is a frog. Chances are slight that Mary picked up the milk. It is likely that if Mary picked up the milk, or Julius is a frog, then Lily is a lion. It is impossible that if Mary picked up the milk, and Julie is in the bedroom, then Brian is a swan. It is probable that if Julie is in the bedroom, and Julius is a frog, then John went to the hallway.
hypothesis: It is probably not the case that either Julius is a frog, or John went to the hallway.
valid_hypothesis: It is probably not the case that either Julius is a frog, or John went to the hallway.
invalid_hypothesis: It is likely that either Julius is a frog, or John went to the hallway.
hypothesis_assertion: Either Julius is a frog, or John went to the hallway.