context: It is unlikely that Brian is a frog. There is little chance that Bernhard is a swan. It is almost certain that Julius is white. It is highly unlikely that if either Julius is white, or Brian is a frog, then Greg is gray. There is a better than even chance that if Julius is white, and Bernhard is a swan, then Mary is in the school. It is highly unlikely that if either Brian is a frog, or Julius is white, then John left the football.
hypothesis: It is likely that mary is in the school, and John left the football.
valid_hypothesis: It is impossible that mary is in the school, and John left the football.
invalid_hypothesis: It is likely that mary is in the school, and John left the football.
hypothesis_assertion: Mary is in the school, and John left the football.