context: Chances are about even that Brian is green. It is improbable that Lily is a rhino. It is improbable that Bernhard is a frog. It is improbable that if Lily is a rhino, and Brian is green, then Julius is yellow. It is probably not the case that if Lily is a rhino, or Brian is green, then Julie is in the bedroom. We believe that if Brian is green, and Lily is a rhino, then John left the apple.
hypothesis: There is a very good chance that either John left the apple, or Julius is yellow.
valid_hypothesis: It is highly unlikely that either John left the apple, or Julius is yellow.
invalid_hypothesis: There is a very good chance that either John left the apple, or Julius is yellow.
hypothesis_assertion: Either John left the apple, or Julius is yellow.