context: There is little chance that Julius is white. Chances are slight that Brian is a frog. It is highly unlikely that Greg is a swan. We believe that if either Greg is a swan, or Brian is a frog, then Sandra got the apple. There is a better than even chance that if either Julius is white, or Brian is a frog, then Bernhard is a rhino. It is probably not the case that if Greg is a swan, or Julius is white, then Lily is white.
hypothesis: There is a very good chance that bernhard is a rhino, or Greg is a swan.
valid_hypothesis: It is unlikely that bernhard is a rhino, or Greg is a swan.
invalid_hypothesis: There is a very good chance that bernhard is a rhino, or Greg is a swan.
hypothesis_assertion: Bernhard is a rhino, or Greg is a swan.