context: Chances are about even that Daniel grabbed the milk. It is likely that Brian is white. It is probably not the case that Mary got the football. There is a better than even chance that if Daniel grabbed the milk, and Mary got the football, then Emily is a mouse. There is little chance that if Brian is white, or Daniel grabbed the milk, then John picked up the apple. We believe that if Daniel grabbed the milk, or Mary got the football, then Julius is a frog.
hypothesis: It is probably not the case that mary got the football, or Emily is a mouse.
valid_hypothesis: It is probably not the case that mary got the football, or Emily is a mouse.
invalid_hypothesis: It is probable that mary got the football, or Emily is a mouse.
hypothesis_assertion: Mary got the football, or Emily is a mouse.