context: It is likely that Daniel is in the office. There is a better than even chance that Bernhard is gray. It is probable that Sandra left the apple. There is a very good chance that if either Sandra left the apple, or Bernhard is gray, then Winona is a wolf. It is probably not the case that if Bernhard is gray, and Sandra left the apple, then John dropped the apple. It is certain that if either Sandra left the apple, or Bernhard is gray, then Lily is white.
hypothesis: We believe that john dropped the apple, and Sandra left the apple.
valid_hypothesis: There is little chance that john dropped the apple, and Sandra left the apple.
invalid_hypothesis: We believe that john dropped the apple, and Sandra left the apple.
hypothesis_assertion: John dropped the apple, and Sandra left the apple.