context: It is likely that Gertrude is a mouse. It is unlikely that Bill went to the garden. There is a very good chance that Julius is green. It is improbable that if either Bill went to the garden, or Julius is green, then Lily is gray. There is a very good chance that if either Julius is green, or Bill went to the garden, then Greg is a swan. It is probably not the case that if Julius is green, and Bill went to the garden, then Fred moved to the office.
hypothesis: Chances are about even that either Gertrude is a mouse, or Julius is green.
valid_hypothesis: Chances are about even that either Gertrude is a mouse, or Julius is green.
invalid_hypothesis: There is almost no chance that either Gertrude is a mouse, or Julius is green.
hypothesis_assertion: Either Gertrude is a mouse, or Julius is green.