context: It is probably not the case that John discarded the milk. It is probable that Brian is gray. It is probably not the case that Lily is a rhino. There is a better than even chance that if either Lily is a rhino, or John discarded the milk, then Daniel is in the office. It is impossible that if John discarded the milk, and Lily is a rhino, then Greg is white. It is certain that if Lily is a rhino, or Brian is gray, then Mary moved to the office.
hypothesis: We doubt that lily is a rhino, and Brian is gray.
valid_hypothesis: We doubt that lily is a rhino, and Brian is gray.
invalid_hypothesis: It is certain that lily is a rhino, and Brian is gray.
hypothesis_assertion: Lily is a rhino, and Brian is gray.