context: There is almost no chance that John picked up the milk. It is highly likely that Emily is a cat. It is almost certain that Lily is a frog. It is improbable that if either John picked up the milk, or Emily is a cat, then Julius is green. It is likely that if either Emily is a cat, or John picked up the milk, then Brian is gray. We doubt that if Lily is a frog, or Emily is a cat, then Mary dropped the apple.
hypothesis: There is a better than even chance that emily is a cat, and Brian is gray.
valid_hypothesis: There is a better than even chance that emily is a cat, and Brian is gray.
invalid_hypothesis: It is impossible that emily is a cat, and Brian is gray.
hypothesis_assertion: Emily is a cat, and Brian is gray.