context: There is little chance that Brian is a swan. There is a better than even chance that Lily is gray. It is probable that Sandra left the football.
hypothesis: Chances are about even that either Lily is gray, or Sandra left the football.
valid_hypothesis: Chances are about even that either Lily is gray, or Sandra left the football.
invalid_hypothesis: It is impossible that either Lily is gray, or Sandra left the football.
hypothesis_assertion: Either Lily is gray, or Sandra left the football.