context: It is impossible that John went to the office. There is almost no chance that Bernhard is gray. It is certain that Mary grabbed the milk. It is impossible that if John went to the office, and Mary grabbed the milk, then Julius is yellow. It is almost certain that if John went to the office, and Bernhard is gray, then Lily is white. It is almost certain that if either John went to the office, or Mary grabbed the milk, then Brian is a lion.
hypothesis: It is almost certain that either Lily is white, or Brian is a lion.
valid_hypothesis: It is almost certain that either Lily is white, or Brian is a lion.
invalid_hypothesis: It is unlikely that either Lily is white, or Brian is a lion.
hypothesis_assertion: Either Lily is white, or Brian is a lion.