context: It is impossible that Greg is a rhino. It is impossible that Sandra got the apple. It is probably not the case that Lily is gray.
hypothesis: Chances are about even that sandra got the apple, or Greg is a rhino.
valid_hypothesis: It is impossible that sandra got the apple, or Greg is a rhino.
invalid_hypothesis: Chances are about even that sandra got the apple, or Greg is a rhino.
hypothesis_assertion: Sandra got the apple, or Greg is a rhino.