context: There is little chance that Greg is a swan. There is a better than even chance that Emily is a cat. It is almost certain that Sandra grabbed the milk. It is highly likely that if either Emily is a cat, or Greg is a swan, then Fred is in the school. It is almost certain that if Emily is a cat, and Sandra grabbed the milk, then Bernhard is green. It is highly unlikely that if Emily is a cat, and Sandra grabbed the milk, then Lily is gray.
hypothesis: There is almost no chance that lily is gray, and Fred is in the school.
valid_hypothesis: There is almost no chance that lily is gray, and Fred is in the school.
invalid_hypothesis: It is probable that lily is gray, and Fred is in the school.
hypothesis_assertion: Lily is gray, and Fred is in the school.