context: It is unlikely that Brian is a rhino. It is probable that Greg is gray. It is probably the case that Jeff went to the hallway.
hypothesis: There is a better than even chance that either Brian is a rhino, or Jeff went to the hallway.
valid_hypothesis: There is a better than even chance that either Brian is a rhino, or Jeff went to the hallway.
invalid_hypothesis: It is impossible that either Brian is a rhino, or Jeff went to the hallway.
hypothesis_assertion: Either Brian is a rhino, or Jeff went to the hallway.