context: It is highly unlikely that John got the apple. There is little chance that Brian is a rhino. It is probably the case that Fred moved to the office. Chances are about even that if either Fred moved to the office, or John got the apple, then Bernhard is gray. It is likely that if Fred moved to the office, or John got the apple, then Gertrude is a mouse. It is certain that if either Brian is a rhino, or John got the apple, then Julius is yellow.
hypothesis: It is improbable that either John got the apple, or Brian is a rhino.
valid_hypothesis: It is improbable that either John got the apple, or Brian is a rhino.
invalid_hypothesis: There is a very good chance that either John got the apple, or Brian is a rhino.
hypothesis_assertion: Either John got the apple, or Brian is a rhino.