context: It is unlikely that Greg is a swan. There is little chance that Mary went to the bedroom. It is probably the case that Julius is gray. We believe that if either Greg is a swan, or Julius is gray, then Sandra grabbed the apple. Chances are slight that if either Mary went to the bedroom, or Greg is a swan, then Brian is green. It is highly unlikely that if Greg is a swan, and Mary went to the bedroom, then Sumit is tired.
hypothesis: It is highly unlikely that either Sandra grabbed the apple, or Greg is a swan.
valid_hypothesis: There is a better than even chance that either Sandra grabbed the apple, or Greg is a swan.
invalid_hypothesis: It is highly unlikely that either Sandra grabbed the apple, or Greg is a swan.
hypothesis_assertion: Either Sandra grabbed the apple, or Greg is a swan.