context: There is a very good chance that Greg is green. It is probable that Lily is white. It is probable that Julie is in the kitchen. It is likely that if Lily is white, or Julie is in the kitchen, then John moved to the office. It is improbable that if Greg is green, or Lily is white, then Brian is gray. It is impossible that if Greg is green, and Julie is in the kitchen, then Mary left the apple.
hypothesis: It is almost certain that brian is gray, and Mary left the apple.
valid_hypothesis: It is impossible that brian is gray, and Mary left the apple.
invalid_hypothesis: It is almost certain that brian is gray, and Mary left the apple.
hypothesis_assertion: Brian is gray, and Mary left the apple.