context: It is likely that Brian is a swan. It is certain that Jessica is a mouse. Chances are about even that Julius is white. There is a better than even chance that if either Jessica is a mouse, or Brian is a swan, then Greg is yellow. There is a very good chance that if Julius is white, or Jessica is a mouse, then Mary got the apple. It is almost certain that if Brian is a swan, or Julius is white, then John went to the kitchen.
hypothesis: Chances are slight that either Mary got the apple, or Greg is yellow.
valid_hypothesis: It is probably the case that either Mary got the apple, or Greg is yellow.
invalid_hypothesis: Chances are slight that either Mary got the apple, or Greg is yellow.
hypothesis_assertion: Either Mary got the apple, or Greg is yellow.