context: It is likely that Mary is in the bedroom. There is almost no chance that Julius is a frog. It is probably not the case that Sandra got the apple. We doubt that if Julius is a frog, or Sandra got the apple, then Lily is yellow. It is almost certain that if Mary is in the bedroom, or Sandra got the apple, then Bernhard is a swan. Chances are slight that if Sandra got the apple, and Julius is a frog, then Brian is a rhino.
hypothesis: It is certain that lily is yellow, and Brian is a rhino.
valid_hypothesis: It is impossible that lily is yellow, and Brian is a rhino.
invalid_hypothesis: It is certain that lily is yellow, and Brian is a rhino.
hypothesis_assertion: Lily is yellow, and Brian is a rhino.