context: It is certain that Sandra grabbed the milk. We believe that Brian is a frog. Chances are slight that Bernhard is a rhino. It is highly unlikely that if either Brian is a frog, or Bernhard is a rhino, then Lily is a swan. We believe that if either Bernhard is a rhino, or Sandra grabbed the milk, then Mary took the apple. It is improbable that if Brian is a frog, or Bernhard is a rhino, then Winona is a wolf.
hypothesis: There is almost no chance that brian is a frog, or Mary took the apple.
valid_hypothesis: It is highly likely that brian is a frog, or Mary took the apple.
invalid_hypothesis: There is almost no chance that brian is a frog, or Mary took the apple.
hypothesis_assertion: Brian is a frog, or Mary took the apple.