context: It is improbable that Greg is white. There is little chance that Mary put down the milk. It is highly unlikely that Brian is white. It is probably not the case that if Brian is white, or Mary put down the milk, then Julius is gray. It is likely that if Brian is white, or Mary put down the milk, then John dropped the apple. It is certain that if either Greg is white, or Mary put down the milk, then Lily is a swan.
hypothesis: There is almost no chance that mary put down the milk, and Julius is gray.
valid_hypothesis: There is almost no chance that mary put down the milk, and Julius is gray.
invalid_hypothesis: It is certain that mary put down the milk, and Julius is gray.
hypothesis_assertion: Mary put down the milk, and Julius is gray.