context: We believe that John grabbed the milk. Chances are about even that Julius is a frog. There is a very good chance that Mary went to the kitchen.
hypothesis: It is highly unlikely that john grabbed the milk, and Julius is a frog.
valid_hypothesis: Chances are about even that john grabbed the milk, and Julius is a frog.
invalid_hypothesis: It is highly unlikely that john grabbed the milk, and Julius is a frog.
hypothesis_assertion: John grabbed the milk, and Julius is a frog.