context: It is unlikely that Mary went to the kitchen. There is little chance that Sandra grabbed the milk. We doubt that John dropped the apple.
hypothesis: It is certain that either John dropped the apple, or Sandra grabbed the milk.
valid_hypothesis: It is probably not the case that either John dropped the apple, or Sandra grabbed the milk.
invalid_hypothesis: It is certain that either John dropped the apple, or Sandra grabbed the milk.
hypothesis_assertion: Either John dropped the apple, or Sandra grabbed the milk.