context: It is improbable that Mary went to the hallway. It is probable that Brian is a lion. It is certain that Greg is green.
hypothesis: There is little chance that mary went to the hallway, or Greg is green.
valid_hypothesis: It is certain that mary went to the hallway, or Greg is green.
invalid_hypothesis: There is little chance that mary went to the hallway, or Greg is green.
hypothesis_assertion: Mary went to the hallway, or Greg is green.