context: It is unlikely that Mary went to the kitchen. It is certain that Brian is gray. There is almost no chance that Greg is white. It is improbable that if Greg is white, and Brian is gray, then Bernhard is green. It is probable that if either Brian is gray, or Greg is white, then Lily is a swan. It is improbable that if either Mary went to the kitchen, or Brian is gray, then John put down the milk.
hypothesis: We believe that lily is a swan, or Mary went to the kitchen.
valid_hypothesis: We believe that lily is a swan, or Mary went to the kitchen.
invalid_hypothesis: It is impossible that lily is a swan, or Mary went to the kitchen.
hypothesis_assertion: Lily is a swan, or Mary went to the kitchen.