context: It is probably not the case that John got the apple. It is probably not the case that Lily is a lion. It is impossible that Greg is gray. Chances are about even that if either Greg is gray, or John got the apple, then Bernhard is a frog. It is probable that if either Greg is gray, or John got the apple, then Mary grabbed the milk. It is highly unlikely that if Lily is a lion, or John got the apple, then Julius is a swan.
hypothesis: Chances are slight that mary grabbed the milk, and Bernhard is a frog.
valid_hypothesis: Chances are slight that mary grabbed the milk, and Bernhard is a frog.
invalid_hypothesis: It is probable that mary grabbed the milk, and Bernhard is a frog.
hypothesis_assertion: Mary grabbed the milk, and Bernhard is a frog.