context: It is probably not the case that Jessica is a sheep. It is certain that Brian is white. It is highly unlikely that John went to the hallway.
hypothesis: There is a very good chance that either John went to the hallway, or Jessica is a sheep.
valid_hypothesis: It is probably not the case that either John went to the hallway, or Jessica is a sheep.
invalid_hypothesis: There is a very good chance that either John went to the hallway, or Jessica is a sheep.
hypothesis_assertion: Either John went to the hallway, or Jessica is a sheep.