context: It is impossible that Brian is a rhino. It is probably the case that Julius is green. It is highly likely that Lily is a frog.
hypothesis: It is probable that either Brian is a rhino, or Julius is green.
valid_hypothesis: It is probable that either Brian is a rhino, or Julius is green.
invalid_hypothesis: It is probably not the case that either Brian is a rhino, or Julius is green.
hypothesis_assertion: Either Brian is a rhino, or Julius is green.