context: We believe that John went to the office. It is probably the case that Mary grabbed the apple. There is little chance that Greg is a swan.
hypothesis: It is likely that either Greg is a swan, or Mary grabbed the apple.
valid_hypothesis: It is likely that either Greg is a swan, or Mary grabbed the apple.
invalid_hypothesis: It is unlikely that either Greg is a swan, or Mary grabbed the apple.
hypothesis_assertion: Either Greg is a swan, or Mary grabbed the apple.