context: It is certain that John grabbed the milk. There is almost no chance that Greg is a swan. It is certain that Daniel took the football.
hypothesis: It is certain that either Daniel took the football, or Greg is a swan.
valid_hypothesis: It is certain that either Daniel took the football, or Greg is a swan.
invalid_hypothesis: There is little chance that either Daniel took the football, or Greg is a swan.
hypothesis_assertion: Either Daniel took the football, or Greg is a swan.