context: It is highly likely that Julius is a swan. It is probably the case that Mary put down the apple. We doubt that Brian is a rhino. It is almost certain that if Mary put down the apple, or Brian is a rhino, then Greg is white. It is certain that if Mary put down the apple, and Julius is a swan, then Bernhard is a rhino. It is almost certain that if Julius is a swan, or Mary put down the apple, then Fred dropped the apple.
hypothesis: There is a better than even chance that either Mary put down the apple, or Brian is a rhino.
valid_hypothesis: There is a better than even chance that either Mary put down the apple, or Brian is a rhino.
invalid_hypothesis: It is impossible that either Mary put down the apple, or Brian is a rhino.
hypothesis_assertion: Either Mary put down the apple, or Brian is a rhino.