context: It is certain that Sandra got the apple. It is highly likely that Brian is a rhino. It is improbable that Julius is green. There is a better than even chance that if Sandra got the apple, or Brian is a rhino, then Fred moved to the office. We doubt that if Julius is green, and Sandra got the apple, then Lily is a frog. It is certain that if either Sandra got the apple, or Brian is a rhino, then Mary went to the bedroom.
hypothesis: There is a very good chance that either Brian is a rhino, or Julius is green.
valid_hypothesis: There is a very good chance that either Brian is a rhino, or Julius is green.
invalid_hypothesis: There is almost no chance that either Brian is a rhino, or Julius is green.
hypothesis_assertion: Either Brian is a rhino, or Julius is green.