context: It is unlikely that Bernhard is gray. We doubt that Brian is a rhino. It is improbable that Julius is green. There is a better than even chance that if Bernhard is gray, or Brian is a rhino, then Sandra got the football. It is probably not the case that if Julius is green, and Bernhard is gray, then John left the football. We doubt that if either Bernhard is gray, or Brian is a rhino, then Emily is a sheep.
hypothesis: It is impossible that bernhard is gray, and John left the football.
valid_hypothesis: It is impossible that bernhard is gray, and John left the football.
invalid_hypothesis: There is a very good chance that bernhard is gray, and John left the football.
hypothesis_assertion: Bernhard is gray, and John left the football.