context: It is impossible that Julius is white. Chances are slight that Mary got the milk. It is probable that Jeff went to the garden. Chances are about even that if Mary got the milk, and Jeff went to the garden, then Bernhard is a frog. There is little chance that if Jeff went to the garden, and Mary got the milk, then Greg is a swan. We believe that if either Julius is white, or Mary got the milk, then John picked up the apple.
hypothesis: We doubt that jeff went to the garden, or Mary got the milk.
valid_hypothesis: We believe that jeff went to the garden, or Mary got the milk.
invalid_hypothesis: We doubt that jeff went to the garden, or Mary got the milk.
hypothesis_assertion: Jeff went to the garden, or Mary got the milk.