context: There is little chance that Julius is yellow. There is a very good chance that John dropped the apple. It is probably the case that Greg is gray. Chances are slight that if either John dropped the apple, or Greg is gray, then Lily is a rhino. Chances are slight that if John dropped the apple, or Greg is gray, then Bernhard is a lion. We doubt that if Greg is gray, and John dropped the apple, then Brian is a swan.
hypothesis: It is certain that lily is a rhino, and Bernhard is a lion.
valid_hypothesis: It is impossible that lily is a rhino, and Bernhard is a lion.
invalid_hypothesis: It is certain that lily is a rhino, and Bernhard is a lion.
hypothesis_assertion: Lily is a rhino, and Bernhard is a lion.