Task: Question Answering
Input (English): Passage: I had to fly across the country to visit my friend , which meant I had to take an airplane . I packed my bags with all the things I would need on my trip , then I took a taxi to the airport . When I got there , I found the desk for the airline I had purchased a ticket for and stood in line to wait my turn . I gave the lady at the desk my ticket and handed my bag over to her to be checked . She gave me a confirmation receipt and told me which gate my plane was located at . Next , I headed to the gate to board my plane . I placed all of the things in my pockets into a little bowl before walking into the metal detector . After I passed through the attendant handed my things back to me and I was off to find my plane . Question: When did they see that the line was long? Option1: in the taxi Option2: Upon entering airport
Output (English): Upon entering airport