context: It is likely that Lily is white. It is almost certain that Sandra got the football. It is probable that Mary dropped the milk. We doubt that if Sandra got the football, or Mary dropped the milk, then John put down the milk. It is certain that if either Lily is white, or Sandra got the football, then Bernhard is white. Chances are about even that if Lily is white, and Mary dropped the milk, then Greg is a swan.
hypothesis: We doubt that john put down the milk, or Mary dropped the milk.
valid_hypothesis: We believe that john put down the milk, or Mary dropped the milk.
invalid_hypothesis: We doubt that john put down the milk, or Mary dropped the milk.
hypothesis_assertion: John put down the milk, or Mary dropped the milk.