Question: Which city is more populous, Liaoyang or Changchun?

full_context: Document 1: Liaoyuan: Liaoyuan () is a prefecture-level city in Jilin province, People's Republic of China. It is bounded on the west and south by Tieling of Liaoning province, west and north by Siping, and east by Tonghua and Jilin City. Liaoyuan lies some 100 km south of Changchun, the provincial capital. Covering an area of 5,125 km2 , Liaoyuan is the smallest among the prefecture-level divisions of Jilin. Liaoyuan has a total population of 1,176,645 in the prefecture, while the urban area has a population of 462,233.
Document 2: Fushun: Fushun (, formerly romanised as "Fouchouen", using French spelling, also as Fuxi (撫西 )) is a prefecture level city in Liaoning province, China, about 45 km east of Shenyang, with a population of 2,138,090 inhabitants (2010 census) and a total area of 11,272 km2 , 714 km2 of which is the city proper. Situated on the Hun River ("muddy river"), it is one of the industrial and economic development hubs in Liaoning.
Document 3: Lüliang: Lüliang or Lyuliang () is a prefecture-level city in the west of Shanxi province, People's Republic of China, bordering Shaanxi province across the Yellow River to the west, Jinzhong and the provincial capital of Taiyuan to the east, Linfen to the south, and Xinzhou to the north. It has a total area of 21143 km2 and total population of 3,727,057. The metro area of Lüliang has a population of 320,142 at the 2010 census.
Document 4: Hunchun: Hunchun is a county-level city in the Yanbian Korean Autonomous Prefecture, far eastern Jilin province, Northeast China. It borders North Korea (North Hamgyong province) and Russia (Primorsky Krai), has over 250,000 inhabitants, and covers 5,145 square kilometers. It was capital of Balhae/Bohai Kingdom between 785-793 as "Dongyang". The city's name Hunchun comes from the Manchu language meaning "borderland".
Document 5: Siping, Jilin: Siping (), formerly Ssupingkai (), is a prefecture-level city in the west of Jilin province, People's Republic of China. Located in the southwestern part of the province, in the middle of the Songliao Plain and at the intersection of Jilin, Liaoning and Inner Mongolia, Siping covers an area of 14,323 km2 . At the 2010 census, Siping has a total population of 3,386,325 while the urban population is 613,837.
Document 6: Liaoyang: Liaoyang () is a prefecture-level city of east-central Liaoning province, People's Republic of China, situated on the T'ai-tzu River and, together with Anshan, forms a metro area of 2,057,200 inhabitants in 2010. It is approximately one hour south of Shenyang, the provincial capital, by car. Liaoyang is home to Liaoning University's College of Foreign Studies and a number of vocational colleges. The city hosts a limited number of professional basketball and volleyball games in a modern sports facility.
Document 7: 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 8: Dehui: Dehui () is a county-level city under the jurisdiction of Changchun, the capital of Jilin province, People's Republic of China, located in the middle of the Songliao Plain. It has a total population of 906,000 and a rural population of 753,000. Composed of 10 towns, 4 townships and 4 subdistricts, under which there are 308 villages, it is around 80 km north-northeast of central Changchun. It borders Yushu to the northeast, Jiutai to the south, Kuancheng District to the southwest, Nong'an County to the west, as well as the prefecture-level cities of Jilin to the southeast and Songyuan to the northwest.
Document 9: Liaoyang County: Liaoyang County () is a county in east-central Liaoning province of Northeast China. It is under the administration of Liaoyang City, located in between the urban area of Liaoyang City and Anshan City.
Document 10: Anshan: Anshan () is the third largest prefecture-level city in Liaoning province, People's Republic of China. Situated in the central area of the province, Anshan is about 92 km south of Shenyang, the provincial capital. Anshan is on the boundary between the Mountains of eastern Liaoning and the plains of the west. The prefecture has a population of 3,584,000 people and covers an area of about 9,252 km2 . The distance from the east to the west of the prefecture is 133 km . The area contains the famous Qianshan National Park. The city's name is derived from the shape of a nearby mountain that resembles the shape of a horse's saddle, which can be seen on the left (west) about five minutes before the northbound train arrives at Anshan Station. Anshan is home to the Anshan Iron and Steel Group, one of the largest steel producers in China. Anshan is sister cities with Sheffield
Document 11: Yanji: Yanji ("Yeon-gil" or "Yenji" in Korean, formerly romanized as Yenki) is a county-level city in the east of China's Jilin Province, and is the seat of the Yanbian Korean Autonomous Prefecture. Its population is approximately 400,000 of which a large portion is ethnic Korean. Yanji is a busy hub of transport and trade between China and North Korea.
Document 12: Tonghua: Tonghua () is an industrial city in the south of Jilin province, People's Republic of China. It borders North Korea to the south and southeast, Baishan to the east, Jilin City to the north, Liaoyuan to the northwest, and Liaoning province to the west and southwest. Administratively, it is a prefecture-level city with a total population of 2,325,242 living in an area of 15195 km2 . Urban population is 506,877. It is known as one of the five medicine production centres in China.
Document 13: Benxi: Benxi () is a prefecture-level city located in the east of Liaoning province, People's Republic of China, south-southeast of the provincial capital Shenyang. Its population was 1,709,538 at the 2010 census whom 1,011,377 lived in the built-up area made of 3 urban districts (Pingshan, Xihu and Mingshan). It was founded as a metallurgical center in 1915. Benxi Iron and Steel Company (Bengang) is the largest employer in the city, and used to be the fourth-largest steel company in China. The second-largest industry in Benxi is coal mining. Benxi has pollution problems due to steel production and coal mining.
Document 14: Haicheng, Liaoning: Haicheng () is a county-level city of central Liaoning province, People's Republic of China. It is located about 120 km southwest of Shenyang, the provincial capital, and is under the administration of Anshan City, the seat of which lies 36 km to the northeast.
Document 15: Shenyang: Shenyang ( ; ), formerly known by its Manchu name Mukden or Fengtian (), is the provincial capital and the largest city of Liaoning Province, People's Republic of China, as well as the largest city in Northeast China by urban population. According to the 2010 census, the city's urban area has 6.3 million inhabitants, while the total population of the Shenyang municipality, which holds the administrative status of a sub-provincial city, is up to 8.1 million. Shenyang's city region includes the ten metropolitan districts of Shenyang "proper", the county-level city of Xinmin, and two counties of Kangping and Faku.
ground_truth: Changchun