context: It is almost certain that Brian is yellow. There is little chance that Fred dropped the apple. It is probable that Bernhard is yellow. We doubt that if Bernhard is yellow, or Fred dropped the apple, then Sandra took the football. There is a very good chance that if Brian is yellow, and Bernhard is yellow, then Lily is green. There is little chance that if Bernhard is yellow, and Fred dropped the apple, then Greg is a swan.
hypothesis: It is highly unlikely that fred dropped the apple, and Lily is green.
valid_hypothesis: It is highly unlikely that fred dropped the apple, and Lily is green.
invalid_hypothesis: It is almost certain that fred dropped the apple, and Lily is green.
hypothesis_assertion: Fred dropped the apple, and Lily is green.