context: It is improbable that Greg is a rhino. There is a better than even chance that Brian is gray. There is little chance that Fred put down the apple.
hypothesis: Chances are slight that either Brian is gray, or Fred put down the apple.
valid_hypothesis: There is a better than even chance that either Brian is gray, or Fred put down the apple.
invalid_hypothesis: Chances are slight that either Brian is gray, or Fred put down the apple.
hypothesis_assertion: Either Brian is gray, or Fred put down the apple.