Question: Which city is located farther south in China, Lingwu or Changsha?

full_context: Document 1: Huaihua: Huaihua () is a prefecture-level city in the south western Hunan, China. it covers 27,564 km2 and is bordered by Xiangxi to the northern west; Zhangjiajie, Changde to the north; Yiyang, Loudi and Shaoyang to the east; Guilin and Liuzhou of Guangxi to the south; Qiandongnan, Tongren of Guizhou to the southern west. It has 4,741,948 of population (2010 census), shares 7.22% of the province. According to 2010 Census, there are 2,909,574 Han Chinese, Han shares 61.4% of the population, 1,832,289 population of minorities, 38.6%; Dong, Miao, Tujia, Yao and Bai are major native minorities. Huaihua is the central region of Dong ethnic population, there lives 816,481 Dong people (2010 census), it shares 28.35 per centage of Chinese Dong ethnic group.
Document 2: Liling: Liling () is a county-level city and the 12th most populous county-level division in Hunan Province, China; it is under the administration of Zhuzhou prefecture-level City. Located on the middle eastern margin of the province, the city is bordered to the north by Liuyang City, to the west by Lusong District and Zhuzhou County, to the south by You County, to the east by Xiangdong District of Yichun, Shangli County of Jiangxi. Liling City covers 2,157 km2 with registered population of 978,900 and resident population of 1,060,000 (as of 2015).
Document 3: Changsha Huanghua International Airport: Changsha Huanghua International Airport (IATA: CSX, ICAO: ZGHA) is the airport serving Changsha, Hunan province, China, as well as nearby cities such as Zhuzhou and Xiangtan. As of 2016, it is the 13th busiest civil airport in China. Located about 25 km from downtown Changsha in the town of Huanghua in Changsha County, the airport has two terminal buildings. The airport is managed by the Hunan Airport Authority, a publicly owned corporation managing all five airports in Hunan Province. Changsha Datuopu Airport/AFB (IATA: CSX, ICAO: ZGCS) (also called Changsha City) is the second airport serving Changsha and mainly used for military purpose.
Document 4: Changchun: Changchun () is the capital and largest city of Jilin Province, and is located in the northeast of China. Lying in the center of the Songliao Plain, Changchun is administered as a , comprising 7 districts, 1 county and 2 county-level cities. According to the 2010 census of China, Changchun had a total population of 7,674,439 under its jurisdiction. The city's urbanized ("or metro") area, comprising 5 districts and 4 development areas, had a population of 3,815,270 in 2010 as the Shuangyang and Jiutai districts are not urbanized yet.
Document 5: Yinchuan: Yinchuan is the capital of the Ningxia Hui Autonomous Region, China, and historically it was the former capital of the Western Xia Empire of the Tanguts. It has an area of 4467 sqkm and a total population of 1.99 million. Its built up area is home to 1,290,170 inhabitants spread on three urban districts. The name of the city literally means "silver river".
Document 6: Changsha: Changsha (tsã13 sɔ33 sɿ21 ; ) is the capital of Hunan province, south central China. It covers 11,819 km2 and is bordered by Yueyang and Yiyang to the north, Loudi to the west, Xiangtan and Zhuzhou to the south, Yichun and Pingxiang of Jiangxi province to the east. According to 2010 Census, Changsha has 7,044,118 residents, constituting 10.72% of the province's population.
Document 7: Greater Changsha Metropolitan Region: Greater Changsha Metropolitan Region or Changsha-Zhuzhou-Xiangtan City Cluster () is a large area in Hunan province, China, consisting of three prefecture-level cities of Changsha, Xiangtan and Zhuzhou, the place is the heavily urbanized region of Hunan and covers an area of 28,087 km. It covers an area of 1,883 km in the urban area with 5.92 millions of popupation, GDP reaches CN￥ 568.37 billions(US$ 90.04 billions), GDP per capita is CN￥ 96,067(US$ 15,665), the core area of three cities (Changzhutan metropolis) has an area of 483.77 km in 2012. On December 14, 2007, it was issued as Comprehensive Supporting Reform Trial Areas to build a resource conserving and environment friendly society by China NDRC.
Document 8: Yinchuan Hedong International Airport: Yinchuan Hedong International Airport (IATA: INC, ICAO: ZLIC) is the primary airport serving Yinchuan, the capital of Ningxia Hui Autonomous Region, People's Republic of China. It is located 25 km southeast of downtown Yinchuan in the town of Linghe of Lingwu City. A relatively small airport compared to many airports in China, it nevertheless is the autonomous region's main aviation gateway. Its name "Hedong" literally means "East of the River" and derives from the airport's location east of the Yellow River. It is connected to over 20 cities by either direct flights, or transferring in Xi'an and Beijing. The terminal building covers a total area of 15,000 m2 . In 2013, the airport handled 4,247,843 passengers, making it the 39th-busiest airport in China.
Document 9: Changsha University: Changsha University (CCSU; ) is located in Changsha, Hunan province, central south of China. Changsha University, or Changsha college, is authorized by the Ministry of Education May 2004. Reconstruction and update based on Changsha University status (specialized subject) that is ordinary undergraduate course colleges and university. School was under the condominium by provinces and cities, mainly in Changsha city management system.The central school is located in the famous historical and cultural city ---- Changsha city, Hunan province. The school covers an area of 1.326 million square meters and now existing two campus, the school construction area is more than 290000 square meters, instruments and equipments for teaching and scientific research value 83.5 million Chinese yuan, the library now houses a collection of 1.18 million books, 13312 full time students.
Document 10: Western Xia mausoleums: Occupying an area of some 50 km2 , the Western Xia mausoleums at the foot of the Helan Mountains in the Ningxia Hui Autonomous Region of northwestern China includes nine imperial mausoleums and 250 tombs of imperial relatives and officials. This burial complex lies some 40 km westward from capital city of the Western Xia, the Xingqing fu or Xingqing, what is modern-day Yinchuan, capital of Ningxia Hui Autonomous Region.
Document 11: Yulin, Guangxi: Yulin (), formerly romanized as Watlam, is one of the fourteen prefecture-level cities of the Guangxi Zhuang Autonomous Region, People's Republic of China. Its Chinese name was changed in 1956 from the historical name 鬱林 (), which only sounds the same in Mandarin as the current one, but very different in the local dialect of Yue Chinese; 鬱 is uat˥ while 玉 is ȵok˨. The former romanization follows the pronunciation of the historical name in Yue Chinese.
Document 12: Lingwu: Lingwu () is the most important industrial city of the Ningxia Hui Autonomous Region, in the northwestern region of the People's Republic of China. It is under the jurisdiction of Yinchuan, the Region's capital city.
Document 13: Changsha County: Changsha County () is a county in Hunan Province, China. It is under the administration of Changsha City. Located in the west portion of Changsha, the county is bordered to the north by Miluo City and Pingjiang County, to the west by Wangcheng, Kaifu and Furong Districts, to the southwest by Yuhua District, and to the southeast and the east by Liuyang City. Changsha County covers 1,756 km2 . As of 2015 it has a registered population of 743,000 and a permanent resident population of 916,000. The county has 5 subdistricts and 13 towns under its jurisdiction. The county seat is Xingsha Subdistrict (星沙街道).
Document 14: Wuzhong, Ningxia: Wuzhong () is a prefecture-level city in the Ningxia autonomous region of the People's Republic of China. It was known as Yinnan Prefecture () before it was upgraded to a prefecture-level city in 1998. In 2010, Wuzhong had a population of 1.3 million.
Document 15: Linxia City: Linxia City (), once known as Hezhou (), is a county-level city in the province of Gansu of the People's Republic of China, and the capital of the multi-ethnic Linxia Hui Autonomous Prefecture. It is located in the valley of the Daxia River (a right tributary of the Yellow River), 150 km (by road) southwest of the provincial capital Lanzhou.
ground_truth: Changsha