context: It is probably not the case that Greg is gray. It is highly likely that Brian is gray. It is highly likely that Julius is white. It is almost certain that if Brian is gray, and Greg is gray, then Fred left the football. There is almost no chance that if Julius is white, and Greg is gray, then John put down the apple. There is almost no chance that if Julius is white, or Greg is gray, then Mary went to the hallway.
hypothesis: It is highly unlikely that greg is gray, or Julius is white.
valid_hypothesis: It is almost certain that greg is gray, or Julius is white.
invalid_hypothesis: It is highly unlikely that greg is gray, or Julius is white.
hypothesis_assertion: Greg is gray, or Julius is white.