context: Chances are about even that Julius is green. There is a very good chance that Bernhard is a lion. There is a very good chance that Greg is a frog. It is probably not the case that if either Bernhard is a lion, or Greg is a frog, then Mary discarded the apple. It is highly unlikely that if Bernhard is a lion, and Greg is a frog, then John went to the bedroom. It is highly unlikely that if either Greg is a frog, or Julius is green, then Brian is gray.
hypothesis: There is a very good chance that mary discarded the apple, or Greg is a frog.
valid_hypothesis: There is a very good chance that mary discarded the apple, or Greg is a frog.
invalid_hypothesis: Chances are slight that mary discarded the apple, or Greg is a frog.
hypothesis_assertion: Mary discarded the apple, or Greg is a frog.