premise: Door<br>Alvin opened the door. He surprised his Wife. His wife had a visitor. His name was Frank. His wife was cheating on him with Frank.
hypothesis: Frank knew Alvin was coming then.
reason: Reason:  They were surprised; since it was an affair, Frank would not have been there had he known Alvin was coming.  Why:  It couldn't decided between Incorrect or Neither (this one was right on the line!)