context: There is a very good chance that Brian is green. There is almost no chance that Greg is a frog. We believe that Julius is gray. It is certain that if Julius is gray, or Brian is green, then Mary dropped the milk. It is probably not the case that if Brian is green, or Julius is gray, then John discarded the milk. There is almost no chance that if either Greg is a frog, or Julius is gray, then Bill went to the hallway.
hypothesis: It is improbable that either Mary dropped the milk, or Brian is green.
valid_hypothesis: It is improbable that either Mary dropped the milk, or Brian is green.
invalid_hypothesis: It is highly likely that either Mary dropped the milk, or Brian is green.
hypothesis_assertion: Either Mary dropped the milk, or Brian is green.