context: Chances are slight that Brian is a lion. It is impossible that Jeff dropped the apple. There is little chance that Daniel left the football. It is probable that if Daniel left the football, or Brian is a lion, then Greg is a swan. Chances are slight that if Jeff dropped the apple, or Daniel left the football, then Bernhard is gray. There is a better than even chance that if Daniel left the football, or Jeff dropped the apple, then Mary moved to the garden.
hypothesis: There is a very good chance that brian is a lion, or Mary moved to the garden.
valid_hypothesis: It is unlikely that brian is a lion, or Mary moved to the garden.
invalid_hypothesis: There is a very good chance that brian is a lion, or Mary moved to the garden.
hypothesis_assertion: Brian is a lion, or Mary moved to the garden.