context: Chances are about even that Julius is a frog. It is certain that Gertrude is a wolf. It is probably not the case that Mary is in the office. We believe that if either Gertrude is a wolf, or Julius is a frog, then Greg is gray. It is likely that if Mary is in the office, or Julius is a frog, then Sandra left the apple. It is likely that if Mary is in the office, and Julius is a frog, then John got the football.
hypothesis: It is impossible that greg is gray, and John got the football.
valid_hypothesis: It is impossible that greg is gray, and John got the football.
invalid_hypothesis: It is probable that greg is gray, and John got the football.
hypothesis_assertion: Greg is gray, and John got the football.