context: Chances are about even that Lily is a frog. We doubt that Bill is in the park. Chances are slight that Bernhard is a rhino.
hypothesis: Chances are about even that bernhard is a rhino, and Lily is a frog.
valid_hypothesis: It is highly unlikely that bernhard is a rhino, and Lily is a frog.
invalid_hypothesis: Chances are about even that bernhard is a rhino, and Lily is a frog.
hypothesis_assertion: Bernhard is a rhino, and Lily is a frog.