context: We doubt that Winona is a mouse. Chances are about even that Julius is a swan. We believe that Brian is a lion. We believe that if either Julius is a swan, or Brian is a lion, then Daniel got the milk. It is highly likely that if Julius is a swan, and Brian is a lion, then Lily is a rhino. It is impossible that if Brian is a lion, and Winona is a mouse, then Bernhard is white.
hypothesis: It is highly unlikely that winona is a mouse, and Lily is a rhino.
valid_hypothesis: It is highly unlikely that winona is a mouse, and Lily is a rhino.
invalid_hypothesis: It is likely that winona is a mouse, and Lily is a rhino.
hypothesis_assertion: Winona is a mouse, and Lily is a rhino.