context: It is highly unlikely that Mary took the football. It is improbable that Lily is green. Chances are slight that Winona is a cat.
hypothesis: There is a very good chance that winona is a cat, and Lily is green.
valid_hypothesis: There is almost no chance that winona is a cat, and Lily is green.
invalid_hypothesis: There is a very good chance that winona is a cat, and Lily is green.
hypothesis_assertion: Winona is a cat, and Lily is green.