context: It is likely that Jessica is a sheep. It is probably the case that Mary grabbed the apple. Chances are about even that John went to the hallway.
hypothesis: It is impossible that either Jessica is a sheep, or Mary grabbed the apple.
valid_hypothesis: Chances are about even that either Jessica is a sheep, or Mary grabbed the apple.
invalid_hypothesis: It is impossible that either Jessica is a sheep, or Mary grabbed the apple.
hypothesis_assertion: Either Jessica is a sheep, or Mary grabbed the apple.