context: Chances are about even that Brian is green. We doubt that Julius is white. It is impossible that Fred left the football. There is a better than even chance that if Brian is green, and Julius is white, then Daniel grabbed the milk. Chances are about even that if Julius is white, and Fred left the football, then John went to the bedroom. There is almost no chance that if Brian is green, and Julius is white, then Greg is yellow.
hypothesis: It is highly unlikely that fred left the football, or Brian is green.
valid_hypothesis: Chances are about even that fred left the football, or Brian is green.
invalid_hypothesis: It is highly unlikely that fred left the football, or Brian is green.
hypothesis_assertion: Fred left the football, or Brian is green.