context: It is likely that Sandra left the apple. It is improbable that Mary got the milk. It is certain that Gertrude is a mouse. We believe that if either Gertrude is a mouse, or Sandra left the apple, then Brian is a rhino. There is a very good chance that if either Gertrude is a mouse, or Mary got the milk, then Lily is a swan. It is probably the case that if Mary got the milk, or Sandra left the apple, then John went to the hallway.
hypothesis: It is almost certain that either Lily is a swan, or Gertrude is a mouse.
valid_hypothesis: It is probably not the case that either Lily is a swan, or Gertrude is a mouse.
invalid_hypothesis: It is almost certain that either Lily is a swan, or Gertrude is a mouse.
hypothesis_assertion: Either Lily is a swan, or Gertrude is a mouse.