context: We doubt that Jeff dropped the apple. It is probable that Mary went to the bedroom. Chances are about even that Julius is a rhino. It is probably not the case that if either Jeff dropped the apple, or Julius is a rhino, then Lily is white. It is highly likely that if either Mary went to the bedroom, or Jeff dropped the apple, then Greg is a lion. It is improbable that if Jeff dropped the apple, and Mary went to the bedroom, then Bernhard is a swan.
hypothesis: We believe that mary went to the bedroom, or Jeff dropped the apple.
valid_hypothesis: We believe that mary went to the bedroom, or Jeff dropped the apple.
invalid_hypothesis: There is little chance that mary went to the bedroom, or Jeff dropped the apple.
hypothesis_assertion: Mary went to the bedroom, or Jeff dropped the apple.