context: There is little chance that Greg is gray. It is certain that Bernhard is a rhino. It is almost certain that John went to the office. There is little chance that if Bernhard is a rhino, and Greg is gray, then Brian is yellow. We doubt that if either Greg is gray, or John went to the office, then Fred discarded the milk. It is highly unlikely that if Bernhard is a rhino, and Greg is gray, then Mary dropped the apple.
hypothesis: There is a very good chance that either Brian is yellow, or Fred discarded the milk.
valid_hypothesis: We doubt that either Brian is yellow, or Fred discarded the milk.
invalid_hypothesis: There is a very good chance that either Brian is yellow, or Fred discarded the milk.
hypothesis_assertion: Either Brian is yellow, or Fred discarded the milk.