context: There is almost no chance that Greg is white. Chances are slight that Brian is yellow. It is impossible that Mary got the milk.
hypothesis: It is probably the case that either Brian is yellow, or Mary got the milk.
valid_hypothesis: Chances are slight that either Brian is yellow, or Mary got the milk.
invalid_hypothesis: It is probably the case that either Brian is yellow, or Mary got the milk.
hypothesis_assertion: Either Brian is yellow, or Mary got the milk.