context: Chances are slight that Mary left the football. It is highly unlikely that Brian is gray. It is likely that Bernhard is a frog.
hypothesis: Chances are slight that either Mary left the football, or Brian is gray.
valid_hypothesis: Chances are slight that either Mary left the football, or Brian is gray.
invalid_hypothesis: It is certain that either Mary left the football, or Brian is gray.
hypothesis_assertion: Either Mary left the football, or Brian is gray.