context: It is probable that John left the apple. It is probably not the case that Bernhard is green. We doubt that Julius is gray. We doubt that if Bernhard is green, and Julius is gray, then Sandra grabbed the milk. It is likely that if either Bernhard is green, or Julius is gray, then Lily is a swan. Chances are slight that if either Julius is gray, or John left the apple, then Mary moved to the garden.
hypothesis: It is impossible that sandra grabbed the milk, and Lily is a swan.
valid_hypothesis: It is impossible that sandra grabbed the milk, and Lily is a swan.
invalid_hypothesis: It is probable that sandra grabbed the milk, and Lily is a swan.
hypothesis_assertion: Sandra grabbed the milk, and Lily is a swan.