context: There is a better than even chance that Greg is white. There is a very good chance that Julius is green. Chances are about even that Brian is yellow. It is highly unlikely that if Julius is green, and Greg is white, then Jason is bored. It is improbable that if Brian is yellow, and Julius is green, then Bill went to the cinema. There is a very good chance that if Brian is yellow, or Greg is white, then Sandra got the milk.
hypothesis: There is almost no chance that julius is green, and Brian is yellow.
valid_hypothesis: Chances are about even that julius is green, and Brian is yellow.
invalid_hypothesis: There is almost no chance that julius is green, and Brian is yellow.
hypothesis_assertion: Julius is green, and Brian is yellow.