context: It is highly unlikely that John moved to the garden. It is impossible that Brian is a lion. It is probable that Greg is a frog. There is a very good chance that if Brian is a lion, and Greg is a frog, then Sandra left the football. There is a better than even chance that if either Brian is a lion, or Greg is a frog, then Julius is gray. We believe that if Brian is a lion, and John moved to the garden, then Mary went to the bedroom.
hypothesis: Chances are about even that mary went to the bedroom, or Julius is gray.
valid_hypothesis: Chances are about even that mary went to the bedroom, or Julius is gray.
invalid_hypothesis: It is certain that mary went to the bedroom, or Julius is gray.
hypothesis_assertion: Mary went to the bedroom, or Julius is gray.