context: It is improbable that Jeff dropped the apple. There is a very good chance that Brian is a rhino. We doubt that Fred left the football.
hypothesis: It is probably not the case that either Fred left the football, or Jeff dropped the apple.
valid_hypothesis: It is probably not the case that either Fred left the football, or Jeff dropped the apple.
invalid_hypothesis: It is probably the case that either Fred left the football, or Jeff dropped the apple.
hypothesis_assertion: Either Fred left the football, or Jeff dropped the apple.