context: There is a very good chance that Lily is a lion. We doubt that Greg is a frog. It is almost certain that John is in the hallway. It is probable that if either Lily is a lion, or Greg is a frog, then Mary moved to the garden. Chances are slight that if Lily is a lion, and John is in the hallway, then Brian is green. It is highly unlikely that if Lily is a lion, and Greg is a frog, then Daniel put down the milk.
hypothesis: It is highly unlikely that john is in the hallway, and Mary moved to the garden.
valid_hypothesis: Chances are about even that john is in the hallway, and Mary moved to the garden.
invalid_hypothesis: It is highly unlikely that john is in the hallway, and Mary moved to the garden.
hypothesis_assertion: John is in the hallway, and Mary moved to the garden.