context: It is probable that John went to the hallway. It is probably not the case that Lily is a swan. We doubt that Sandra grabbed the apple.
hypothesis: We believe that john went to the hallway, or Sandra grabbed the apple.
valid_hypothesis: We believe that john went to the hallway, or Sandra grabbed the apple.
invalid_hypothesis: There is little chance that john went to the hallway, or Sandra grabbed the apple.
hypothesis_assertion: John went to the hallway, or Sandra grabbed the apple.