context: We doubt that John went to the hallway. It is probably not the case that Yann is bored. It is probably not the case that Bill dropped the apple.
hypothesis: It is probably the case that either John went to the hallway, or Bill dropped the apple.
valid_hypothesis: It is probably not the case that either John went to the hallway, or Bill dropped the apple.
invalid_hypothesis: It is probably the case that either John went to the hallway, or Bill dropped the apple.
hypothesis_assertion: Either John went to the hallway, or Bill dropped the apple.