context: It is almost certain that Julius is gray. There is almost no chance that Greg is a frog. It is highly unlikely that Mary is in the bedroom. It is probable that if Julius is gray, and Mary is in the bedroom, then John took the apple. There is a better than even chance that if Julius is gray, or Greg is a frog, then Emily is a sheep. There is a better than even chance that if either Greg is a frog, or Julius is gray, then Brian is a swan.
hypothesis: There is a better than even chance that john took the apple, or Brian is a swan.
valid_hypothesis: There is a better than even chance that john took the apple, or Brian is a swan.
invalid_hypothesis: Chances are slight that john took the apple, or Brian is a swan.
hypothesis_assertion: John took the apple, or Brian is a swan.