context: Chances are about even that Brian is green. There is little chance that John left the milk. It is unlikely that Julius is a frog. It is highly unlikely that if either Brian is green, or Julius is a frog, then Lily is white. There is little chance that if Brian is green, and Julius is a frog, then Mary went to the hallway. It is probable that if Brian is green, and Julius is a frog, then Bernhard is gray.
hypothesis: It is almost certain that either Lily is white, or Brian is green.
valid_hypothesis: Chances are about even that either Lily is white, or Brian is green.
invalid_hypothesis: It is almost certain that either Lily is white, or Brian is green.
hypothesis_assertion: Either Lily is white, or Brian is green.