context: Chances are slight that Mary put down the milk. There is little chance that Fred moved to the office. It is almost certain that Jessica is a wolf. There is a better than even chance that if Jessica is a wolf, and Fred moved to the office, then John picked up the apple. It is certain that if Jessica is a wolf, and Mary put down the milk, then Greg is a frog. It is improbable that if either Fred moved to the office, or Mary put down the milk, then Bernhard is green.
hypothesis: There is a very good chance that either Fred moved to the office, or Mary put down the milk.
valid_hypothesis: We doubt that either Fred moved to the office, or Mary put down the milk.
invalid_hypothesis: There is a very good chance that either Fred moved to the office, or Mary put down the milk.
hypothesis_assertion: Either Fred moved to the office, or Mary put down the milk.