context: It is unlikely that Fred went to the bedroom. It is impossible that Greg is a swan. Chances are slight that Julius is gray. It is probably the case that if either Greg is a swan, or Julius is gray, then Lily is a frog. Chances are slight that if Fred went to the bedroom, or Julius is gray, then John moved to the office. It is probably not the case that if Fred went to the bedroom, and Greg is a swan, then Brian is yellow.
hypothesis: It is almost certain that either Fred went to the bedroom, or Greg is a swan.
valid_hypothesis: It is unlikely that either Fred went to the bedroom, or Greg is a swan.
invalid_hypothesis: It is almost certain that either Fred went to the bedroom, or Greg is a swan.
hypothesis_assertion: Either Fred went to the bedroom, or Greg is a swan.