context: Chances are about even that Sandra left the apple. We doubt that John went to the garden. We believe that Lily is a rhino. There is a very good chance that if either Lily is a rhino, or John went to the garden, then Brian is gray. We believe that if either John went to the garden, or Sandra left the apple, then Julius is a swan. It is probably not the case that if either Sandra left the apple, or John went to the garden, then Bernhard is a frog.
hypothesis: It is probable that brian is gray, or Julius is a swan.
valid_hypothesis: It is probable that brian is gray, or Julius is a swan.
invalid_hypothesis: It is improbable that brian is gray, or Julius is a swan.
hypothesis_assertion: Brian is gray, or Julius is a swan.