context: There is a very good chance that Bernhard is white. It is likely that Brian is white. It is probably not the case that Lily is a swan. There is little chance that if either Lily is a swan, or Brian is white, then Sandra got the football. There is a better than even chance that if Lily is a swan, and Bernhard is white, then Fred is in the kitchen. It is probable that if either Bernhard is white, or Brian is white, then John picked up the apple.
hypothesis: It is highly unlikely that lily is a swan, or Brian is white.
valid_hypothesis: There is a very good chance that lily is a swan, or Brian is white.
invalid_hypothesis: It is highly unlikely that lily is a swan, or Brian is white.
hypothesis_assertion: Lily is a swan, or Brian is white.