context: It is almost certain that Greg is a frog. There is a better than even chance that Emily is a cat. We believe that Winona is a cat. There is a very good chance that if Emily is a cat, or Greg is a frog, then Mary took the apple. It is improbable that if Winona is a cat, or Greg is a frog, then John left the apple. It is highly unlikely that if Greg is a frog, or Winona is a cat, then Lily is green.
hypothesis: It is probably not the case that either Winona is a cat, or Mary took the apple.
valid_hypothesis: It is probably not the case that either Winona is a cat, or Mary took the apple.
invalid_hypothesis: It is certain that either Winona is a cat, or Mary took the apple.
hypothesis_assertion: Either Winona is a cat, or Mary took the apple.