context: It is probably not the case that John went to the hallway. We believe that Lily is gray. We doubt that Sandra got the apple.
hypothesis: We believe that lily is gray, and Sandra got the apple.
valid_hypothesis: There is little chance that lily is gray, and Sandra got the apple.
invalid_hypothesis: We believe that lily is gray, and Sandra got the apple.
hypothesis_assertion: Lily is gray, and Sandra got the apple.