context: It is probably the case that Julius is a rhino. It is probably the case that Greg is a lion. There is a better than even chance that Jeff discarded the apple. There is a very good chance that if either Greg is a lion, or Julius is a rhino, then Winona is a cat. It is certain that if either Julius is a rhino, or Jeff discarded the apple, then John left the milk. It is likely that if Jeff discarded the apple, and Greg is a lion, then Mary moved to the garden.
hypothesis: Chances are slight that either John left the milk, or Mary moved to the garden.
valid_hypothesis: There is a better than even chance that either John left the milk, or Mary moved to the garden.
invalid_hypothesis: Chances are slight that either John left the milk, or Mary moved to the garden.
hypothesis_assertion: Either John left the milk, or Mary moved to the garden.