context: It is likely that Daniel put down the milk. There is almost no chance that Brian is a frog. We doubt that Mary went to the office. Chances are slight that if Brian is a frog, and Daniel put down the milk, then Fred is in the park. It is highly likely that if Brian is a frog, and Mary went to the office, then Greg is yellow. It is likely that if Daniel put down the milk, or Mary went to the office, then Bernhard is gray.
hypothesis: It is impossible that fred is in the park, and Daniel put down the milk.
valid_hypothesis: It is impossible that fred is in the park, and Daniel put down the milk.
invalid_hypothesis: It is almost certain that fred is in the park, and Daniel put down the milk.
hypothesis_assertion: Fred is in the park, and Daniel put down the milk.