context: It is improbable that Bernhard is a swan. There is little chance that Lily is gray. It is probably the case that John left the apple.
hypothesis: It is highly unlikely that john left the apple, and Lily is gray.
valid_hypothesis: It is highly unlikely that john left the apple, and Lily is gray.
invalid_hypothesis: It is almost certain that john left the apple, and Lily is gray.
hypothesis_assertion: John left the apple, and Lily is gray.