context: It is highly unlikely that Julius is a swan. It is impossible that Mary took the football. There is little chance that Lily is gray.
hypothesis: There is little chance that either Lily is gray, or Julius is a swan.
valid_hypothesis: There is little chance that either Lily is gray, or Julius is a swan.
invalid_hypothesis: There is a better than even chance that either Lily is gray, or Julius is a swan.
hypothesis_assertion: Either Lily is gray, or Julius is a swan.