context: We believe that Daniel got the milk. We doubt that John dropped the apple. There is little chance that Brian is a swan.
hypothesis: It is probably not the case that either Brian is a swan, or John dropped the apple.
valid_hypothesis: It is probably not the case that either Brian is a swan, or John dropped the apple.
invalid_hypothesis: It is probably the case that either Brian is a swan, or John dropped the apple.
hypothesis_assertion: Either Brian is a swan, or John dropped the apple.