context: It is highly unlikely that Lily is green. There is a very good chance that Winona is a cat. Chances are about even that Sandra grabbed the milk.
hypothesis: We believe that either Winona is a cat, or Lily is green.
valid_hypothesis: We believe that either Winona is a cat, or Lily is green.
invalid_hypothesis: It is impossible that either Winona is a cat, or Lily is green.
hypothesis_assertion: Either Winona is a cat, or Lily is green.