context: Chances are slight that Julius is yellow. It is impossible that Brian is white. Chances are about even that Mary left the milk. We doubt that if Mary left the milk, or Brian is white, then Gertrude is a wolf. We believe that if Brian is white, or Julius is yellow, then Greg is gray. It is improbable that if Brian is white, or Mary left the milk, then John put down the apple.
hypothesis: Chances are about even that either Greg is gray, or Julius is yellow.
valid_hypothesis: There is almost no chance that either Greg is gray, or Julius is yellow.
invalid_hypothesis: Chances are about even that either Greg is gray, or Julius is yellow.
hypothesis_assertion: Either Greg is gray, or Julius is yellow.