context: It is unlikely that Mary went to the hallway. There is little chance that Sandra grabbed the milk. It is almost certain that Jeff dropped the apple.
hypothesis: There is almost no chance that sandra grabbed the milk, and Mary went to the hallway.
valid_hypothesis: There is almost no chance that sandra grabbed the milk, and Mary went to the hallway.
invalid_hypothesis: It is certain that sandra grabbed the milk, and Mary went to the hallway.
hypothesis_assertion: Sandra grabbed the milk, and Mary went to the hallway.