context: It is probable that Emily is a cat. It is almost certain that Brian is green. It is almost certain that Fred moved to the office. It is probably the case that if either Emily is a cat, or Fred moved to the office, then Bernhard is a swan. It is highly likely that if Fred moved to the office, or Emily is a cat, then Mary put down the milk. There is a very good chance that if either Fred moved to the office, or Brian is green, then Daniel left the milk.
hypothesis: Chances are about even that brian is green, or Mary put down the milk.
valid_hypothesis: It is certain that brian is green, or Mary put down the milk.
invalid_hypothesis: Chances are about even that brian is green, or Mary put down the milk.
hypothesis_assertion: Brian is green, or Mary put down the milk.