context: It is highly unlikely that Lily is green. It is probably not the case that Brian is gray. It is almost certain that John went to the garden. It is likely that if Lily is green, and John went to the garden, then Daniel left the football. There is little chance that if Lily is green, or Brian is gray, then Bernhard is a swan. There is almost no chance that if John went to the garden, and Brian is gray, then Mary took the apple.
hypothesis: It is almost certain that either John went to the garden, or Mary took the apple.
valid_hypothesis: It is almost certain that either John went to the garden, or Mary took the apple.
invalid_hypothesis: Chances are about even that either John went to the garden, or Mary took the apple.
hypothesis_assertion: Either John went to the garden, or Mary took the apple.