context: It is likely that Lily is gray. It is probably the case that Mary grabbed the milk. It is impossible that Greg is white. We doubt that if either Lily is gray, or Greg is white, then John left the apple. There is a very good chance that if Mary grabbed the milk, and Lily is gray, then Brian is a frog. We doubt that if Mary grabbed the milk, and Greg is white, then Julius is a rhino.
hypothesis: It is impossible that either Julius is a rhino, or Greg is white.
valid_hypothesis: It is impossible that either Julius is a rhino, or Greg is white.
invalid_hypothesis: We believe that either Julius is a rhino, or Greg is white.
hypothesis_assertion: Either Julius is a rhino, or Greg is white.