context: It is probably not the case that Mary put down the milk. There is almost no chance that Brian is a rhino. It is probable that Bernhard is a swan. Chances are slight that if either Bernhard is a swan, or Brian is a rhino, then Winona is a cat. There is a very good chance that if Bernhard is a swan, or Brian is a rhino, then Sandra got the apple. We believe that if either Mary put down the milk, or Bernhard is a swan, then Greg is a frog.
hypothesis: It is almost certain that mary put down the milk, and Sandra got the apple.
valid_hypothesis: It is improbable that mary put down the milk, and Sandra got the apple.
invalid_hypothesis: It is almost certain that mary put down the milk, and Sandra got the apple.
hypothesis_assertion: Mary put down the milk, and Sandra got the apple.