context: There is little chance that Brian is green. Chances are slight that John picked up the apple. It is impossible that Mary went to the bedroom. We believe that if Brian is green, and John picked up the apple, then Sandra grabbed the milk. There is little chance that if Brian is green, or John picked up the apple, then Gertrude is a mouse. We believe that if either Mary went to the bedroom, or Brian is green, then Julius is green.
hypothesis: There is little chance that either Gertrude is a mouse, or Julius is green.
valid_hypothesis: There is little chance that either Gertrude is a mouse, or Julius is green.
invalid_hypothesis: We believe that either Gertrude is a mouse, or Julius is green.
hypothesis_assertion: Either Gertrude is a mouse, or Julius is green.