context: There is a better than even chance that Emily is a cat. It is impossible that Greg is gray. It is almost certain that Winona is a sheep. It is improbable that if Winona is a sheep, or Emily is a cat, then Lily is a swan. It is impossible that if either Winona is a sheep, or Greg is gray, then Mary grabbed the milk. It is impossible that if Winona is a sheep, or Greg is gray, then Bernhard is a swan.
hypothesis: There is little chance that either Emily is a cat, or Greg is gray.
valid_hypothesis: There is a better than even chance that either Emily is a cat, or Greg is gray.
invalid_hypothesis: There is little chance that either Emily is a cat, or Greg is gray.
hypothesis_assertion: Either Emily is a cat, or Greg is gray.