context: We believe that John put down the apple. There is little chance that Brian is a swan. Chances are about even that Jessica is a cat. It is probably the case that if Brian is a swan, and John put down the apple, then Daniel took the milk. It is highly unlikely that if Jessica is a cat, and Brian is a swan, then Mary moved to the office. There is a very good chance that if John put down the apple, and Brian is a swan, then Bernhard is gray.
hypothesis: It is highly unlikely that either John put down the apple, or Mary moved to the office.
valid_hypothesis: We believe that either John put down the apple, or Mary moved to the office.
invalid_hypothesis: It is highly unlikely that either John put down the apple, or Mary moved to the office.
hypothesis_assertion: Either John put down the apple, or Mary moved to the office.