context: Chances are about even that Brian is a frog. Chances are slight that Mary got the football. There is little chance that Bernhard is a frog. There is little chance that if Mary got the football, and Bernhard is a frog, then Lily is green. It is probably the case that if Bernhard is a frog, or Mary got the football, then Julius is a rhino. It is unlikely that if Mary got the football, and Brian is a frog, then John discarded the milk.
hypothesis: It is highly unlikely that bernhard is a frog, and Julius is a rhino.
valid_hypothesis: It is highly unlikely that bernhard is a frog, and Julius is a rhino.
invalid_hypothesis: It is probably the case that bernhard is a frog, and Julius is a rhino.
hypothesis_assertion: Bernhard is a frog, and Julius is a rhino.