context: It is improbable that Sandra got the football. Chances are slight that Julius is gray. It is probably the case that Greg is yellow.
hypothesis: It is likely that julius is gray, and Sandra got the football.
valid_hypothesis: There is almost no chance that julius is gray, and Sandra got the football.
invalid_hypothesis: It is likely that julius is gray, and Sandra got the football.
hypothesis_assertion: Julius is gray, and Sandra got the football.