context: There is almost no chance that Mary left the milk. It is impossible that Bernhard is a rhino. Chances are slight that Daniel grabbed the milk. It is likely that if Bernhard is a rhino, and Daniel grabbed the milk, then Brian is a frog. It is certain that if either Mary left the milk, or Daniel grabbed the milk, then Greg is gray. There is little chance that if either Bernhard is a rhino, or Mary left the milk, then Julius is a rhino.
hypothesis: It is impossible that julius is a rhino, or Brian is a frog.
valid_hypothesis: It is impossible that julius is a rhino, or Brian is a frog.
invalid_hypothesis: It is probably the case that julius is a rhino, or Brian is a frog.
hypothesis_assertion: Julius is a rhino, or Brian is a frog.