Task: Question Answering
Input (English): Passage: I was sitting in my living room reading a book when suddenly I heard the doorbell ring . I was n't expecting anyone , so I did n't know who it could be . Thinking that I should answer it , I got up and walked across the living room , into the foyer and over to the door . `` Just one second , '' I said , as I undid the latch to unlock the door . I opened the door and greeted the man . `` Hi , how are you ? '' I asked . `` I 'd like to take a look at the meter to see if it 's working properly . '' I then left the house and went around back to let him in the gate into the back yard , then I went back , closed the door and went back to reading my book . Question: When did they see it was someone from the gas company? Option1: when he went in the backyard Option2: after he opened the door
Output (English): after he opened the door