question: Which county-level city is under the administration of Yingkou City, Gaizhou or Arxan?
answer: Gaizhou
context: Title: Yingkou Lanqi Airport
  Passage: Yingkou Lanqi Airport (IATA: YKH, ICAO: ZYYK) is an airport serving the city of Yingkou in Liaoning province of Northeast China.  It is located in Lanqi Village in Xishi District of Yingkou, about 17 km from the city center by road.  The airport opened on 3 February 2016, when the inaugural China Eastern Airlines flight landed from Shanghai Pudong International Airport.  The total investment for the project was estimated at CNY 8.94 billion.
  Title: Arxan
  Passage: Arxan (; Mongolian: "Arxaan hôt" or Рашаан хот; literally "spring" or "spa") is a county-level city of northeastern Inner Mongolia, People's Republic of China.  It is under the administration of Hinggan League.
  Title: Gaizhou
  Passage: Gaizhou (), formerly Gaixian and Gaiping, is a county-level city in Liaoning province, southwest China.  It is under the administration of Yingkou City, which lies 31 km to the north-northwest, and is located at the northwest end of the Liaodong Peninsula near the northeast coast of the Bohai Sea.
citations: Gaizhou Arxan