Question: Are both Shuangyashan and Longnan in China?

full_context: Document 1: Sanhe, Longnan: Sanhe () is a town of Wudu District, Longnan, Gansu, People's Republic of China, located 23 km southeast of downtown Longnan as the crow flies. , it has 16 villages under its administration.
Document 2: Longnan Chengzhou Airport: Longnan Chengzhou Airport () is an airport scheduled to be constructed to serve the city of Longnan in southern Gansu Province of China. It is located 10 kilometers from the seat of Cheng County, which is under the administration of Longnan city. The airport received approval from the State Council of China in July 2012. It is expected to cost 1.2 billion yuan to build.
Document 3: Suifenhe: Suifenhe () is a county-level city in southeastern Heilongjiang province, People's Republic of China, located situated where the former Chinese Eastern Railway crosses the border with Russia's town of Pogranichny, Primorsky Krai. In January 2014 Suifenhe became the only Chinese city in which trading with Russian Ruble is allowed.
Document 4: Shuangcheng District: Shuangcheng District () is one of nine districts of Harbin, the capital of Heilongjiang province, People's Republic of China, covering part of the southwestern suburbs. It sits approximately 42 km south-southwest of downtown Harbin. Formerly a county-level city until 15 May 2014. The westernmost county-level division of Harbin City, it borders Daoli District to the north, Nangang and Pingfang Districts to the northeast, Acheng District to the east, and Wuchang to the southeast, as well as the Jilin prefecture-level divisions of Changchun to the south and Songyuan to the southwest.
Document 5: Shuangyashan: Shuangyashan () is a coal mining prefecture-level city located in the eastern part Heilongjiang province, People's Republic of China, bordering Russia's Khabarovsk and Primorsky krais to the east. The city's name means a pair-of-ducks mountains and refers to two peaks northeast of the city. In 2007 it had a GDP of RMB 20.6 billion with a 14.2% growth rate.
Document 6: Longnan: Longnan (Chinese:  隴南 ,  陇南 , "Lǒngnán",  "Southern Gansu") is a prefecture-level city in the southeast of Gansu province in China. It borders Sichuan on its south and Shaanxi on its east.
Document 7: 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 8: Yichun, Heilongjiang: Yichun () is a prefecture-level city on the Songhua river in Heilongjiang province, People's Republic of China. The city is separated from Russia by the Amur River and has an international border of 246 km . At the 2010 census, Yichun has a total population of 1,148,126 while 729,202 people live in 15 districts separated by forests. The greening rate of Yichun is up to 83%. The nickname of Yichun is Lindu ().
Document 9: Dvoinoye Gold Mine: The Dvoinoye Gold Mine is an underground gold mine in the Bilibinsky District of the Chukotka Autonomous Okrug of Russia. The mine is owned by Canadian mining company Kinross Gold and is approximately 100 km from their Kupol Gold Mine. Originally the site of a surface mine, Kinross acquired the property in 2010, and built the underground mine at a cost of US$360-million. The mine began production in 2013.
Document 10: 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 11: Shangluo: Shangluo () is a prefecture-level city in southeastern Shaanxi province, People's Republic of China, bordering Henan to the northeast and Hubei to the southeast. Part of the Shannan region of the province, it is located in the eastern part of the Qin Mountains (Qin Ling). The name, "Shangluo", comes from Han Dynasty when four famous people were settled in Shang Mountain to avoid war and famine.
Document 12: 2008 Longnan riot: The 2008 Longnan riot was a protest that turned into a riot involving thousands of people in Longnan, Gansu, People's Republic of China.
Document 13: Longnan Railway Station: Longnan Railway Station () serves Longnan County in the city of Ganzhou in Jiangxi province, China. Six trains pass through the station every day.
Document 14: Heilongjiang: Heilongjiang () is a province of the People's Republic of China. Located in the northeastern part of the country, Heilongjiang is bordered by Jilin to the south and Inner Mongolia to the west. It also shares a China–Russia border with Russia to the north and east. The capital and the largest city of the province is Harbin. Among Chinese provincial level Administrative divisions, Heilongjiang is the 6th largest by total area and the 15th most populous.
Document 15: Longyan: Longyan (; Hakka: "Liùng-ngàm") is a prefecture-level city in southwestern Fujian province, People's Republic of China, bordering Guangdong to the south and Jiangxi to the west.
ground_truth: yes