context: Chances are about even that John got the milk. There is little chance that Brian is white. We doubt that Lily is a swan. There is a very good chance that if either Lily is a swan, or John got the milk, then Julius is a lion. It is certain that if either Lily is a swan, or Brian is white, then Bernhard is a frog. We doubt that if Lily is a swan, or John got the milk, then Greg is green.
hypothesis: It is almost certain that bernhard is a frog, and John got the milk.
valid_hypothesis: There is little chance that bernhard is a frog, and John got the milk.
invalid_hypothesis: It is almost certain that bernhard is a frog, and John got the milk.
hypothesis_assertion: Bernhard is a frog, and John got the milk.