context: Chances are slight that Lily is a frog. It is impossible that Mary went to the bedroom. It is improbable that Brian is green.
hypothesis: It is impossible that brian is green, and Mary went to the bedroom.
valid_hypothesis: It is impossible that brian is green, and Mary went to the bedroom.
invalid_hypothesis: There is a better than even chance that brian is green, and Mary went to the bedroom.
hypothesis_assertion: Brian is green, and Mary went to the bedroom.