context: We doubt that John went to the hallway. It is probably not the case that Greg is white. It is improbable that Lily is a lion.
hypothesis: It is probably the case that either John went to the hallway, or Greg is white.
valid_hypothesis: It is probably not the case that either John went to the hallway, or Greg is white.
invalid_hypothesis: It is probably the case that either John went to the hallway, or Greg is white.
hypothesis_assertion: Either John went to the hallway, or Greg is white.