context: It is highly likely that Sandra grabbed the milk. Chances are about even that Julius is a lion. There is a very good chance that Mary went to the bedroom.
hypothesis: It is impossible that sandra grabbed the milk, and Mary went to the bedroom.
valid_hypothesis: It is probable that sandra grabbed the milk, and Mary went to the bedroom.
invalid_hypothesis: It is impossible that sandra grabbed the milk, and Mary went to the bedroom.
hypothesis_assertion: Sandra grabbed the milk, and Mary went to the bedroom.