context: Chances are about even that Mary went to the hallway. It is improbable that Brian is green. It is highly unlikely that Daniel put down the milk. Chances are about even that if Brian is green, or Daniel put down the milk, then Julius is yellow. There is little chance that if Brian is green, and Mary went to the hallway, then Lily is a swan. It is certain that if either Brian is green, or Daniel put down the milk, then Bernhard is a lion.
hypothesis: It is highly unlikely that either Brian is green, or Julius is yellow.
valid_hypothesis: It is highly unlikely that either Brian is green, or Julius is yellow.
invalid_hypothesis: It is probably the case that either Brian is green, or Julius is yellow.
hypothesis_assertion: Either Brian is green, or Julius is yellow.