context: Chances are about even that Fred is in the park. Chances are slight that Brian is white. We doubt that Mary went to the kitchen.
hypothesis: There is almost no chance that either Fred is in the park, or Mary went to the kitchen.
valid_hypothesis: Chances are about even that either Fred is in the park, or Mary went to the kitchen.
invalid_hypothesis: There is almost no chance that either Fred is in the park, or Mary went to the kitchen.
hypothesis_assertion: Either Fred is in the park, or Mary went to the kitchen.