Question: Are both Karamay and Meihekou transportation hubs?

full_context: Document 1: 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 2: Karamay Airport: Karamay Airport () (IATA: ZWKM) is an airport serving Karamay, a city in the autonomous region of Xinjiang in the People's Republic of China.
Document 3: Neijiang–Kunming Railway: The Neijiang–Kunming Railway or Neikun Railway (), is a single-track railroad between Neijiang and Kunming in Southwest China. The line runs 872 km from Neijiang in Sichuan province to Kunming in Yunnan province through western Guizhou province. The Neikun Line was built in three sections. The northern section, from Neijiang to Anbian township of Yibin and 140 km in length, was built from 1956 to 1960. The southern section from Kunming to Meihuashan Station, near Liupanshui in Guizhou, and 370 km in length, was built from 1960 to 1965 and became the westernmost segment of the Guiyang-Kunming Railway. The middle section between Anbian and Meihuashan through Zhaotong and 358 km in length was built from 1998 to 2001. Major cities and towns along route include Neijiang, Zigong, Yibin, Shuifu, Zhaotong, Weining Yi, Hui, and Miao Autonomous County, Xuanwei, Qujing and Kunming.
Document 4: Fengcheng Reservoir: The Fengcheng Reservoir () is a reservoir on the Irtysh–Karamay Canal in China's Xinjiang Uighur Autonomous Region. It is about 15 km north of the main urban area of Urho District of Karamay City;
Document 5: Guangzhou–Meizhou–Shantou Railway: The Guangzhou–Meizhou–Shantou Railway () is a railway in Guangdong Province, China. The electrified line, also known as the Guangmeishan Railway, is named after the three primary cities along route Guangzhou, Meizhou and Shantou, and has a total length of 480 km . The line was built from 1991 to 1995. It extends across the eastern half of Guangdong Province from Guangzhou to Meizhou in the interior and then south to Shantou on the coast. Cities along the route include Guangzhou, Dongguan, Huizhou, Heyuan, Longchuan, Xingning, Meizhou, Fengshun, Jieyang, Chaozhou and Shantou. In 1996, the Guangzhou-Longchuan section of the line became the southern-most section of the Beijing–Kowloon Railway.
Document 6: Meihekou: Meihekou () is a city of 600,000 in southwestern Jilin province, People's Republic of China. It is a regional transport hub, connecting three railway lines, all of which are single track, and 2 national highways. The city is also a major lorry transshipment point in the region as it is also the junction of two trunk roads, connected to Liaoyuan in the northwest. The city is administratively a county-level city of Tonghua City.
Document 7: Jilin–Hunchun Intercity Railway: Jilin–Hunchun Intercity Railway, also known as Ji-Hun Passenger Dedicated Line, is a high-speed railway in China's Jilin Province. It connects the provincial capital of Jilin City and the eastern provincial city of Hunchun near the border with Russia and North Korea. It will have a total length of 359 km of electrified double-track railways, built to the Grade 1 standard. Project construction started on October 30, 2010, with operations commencing on September 20, 2015. The railway has been described as "Dongbei's most beautiful railway" (due to the terrain it runs through) and "the fastest way to Vladivostok" (4 hours by train from Shenyang to Hunchun, plus 4 hours by bus from Hunchun to Vladivostok). Reflecting the border location of the city, the new train station has its sign in four languages: Chinese, Korean, Russian, and English. Future prospects could see the line extended into Russia to Vladivostok.
Document 8: 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 9: Karamay: Karamay or Kelamayi is a prefecture-level city in the north of the Xinjiang Uygur Autonomous Region, People's Republic of China. The name of the city comes from the Uyghur language, and means "black oil", referring to the oil fields near the city.
Document 10: 1994 Karamay fire: The 1994 Karamay fire () (literally Karamay Big Fire) is considered one of the worst civilian fires in the history of the People's Republic of China. On December 8, 1994, a fire broke out in a theatre hosting 1,000 children and teachers in Karamay, Xinjiang Uyghur Autonomous Region. During the fire, the students and teachers were ordered to remain seated to allow Communist Party officials to walk out first. The fire killed 325, including 288 schoolchildren.
Document 11: Tumen, Jilin: Tumen is a county-level city in Yanbian Korean Autonomous Prefecture, eastern Jilin province, Northeast China. Of its 136,000 inhabitants, approximately 78,000 (or 57%) are of Korean descent. The two official languages are Chinese and Korean. Tumen is separated from Namyang of North Hamgyong province of North Korea by the Tumen River. Due to this proximity, many North Koreans escaping their country pass through Tumen. Tumen is also the location of a large detention center for captured North Koreans awaiting deportation. Tumen has two major food markets, the South Market and the North Market, where most of the residents purchase their food. Packaged foods and meats are usually sold inside the building, and vegetables are sold outside. There are six elementary schools, with three Korean schools, and three Chinese schools.
Document 12: Karamay oil field: The Karamay oil field is an oil field located in Xinjiang. It was discovered in 1955 and developed by China National Petroleum Corporation. It began production in 1955 and produces oil. The total proven reserves of the Karamay oil field are around 3 billion barrels (423×10tonnes), and production is centered on 290000 oilbbl/d .
Document 13: Karamay dialect: Karamay dialect is a Beijing Mandarin dialect spoken by Han Chinese People in northern Xinjiang, China. It is also known as North Xinjiang Area dialect (), the regions of which include Karamay, Shihezi, Burqin County, Toli County, Hoboksar Mongol Autonomous County, Wenquan County in northern Xinjiang and a few other regions in the southern.
Document 14: Aral, Xinjiang: Aral, Ala'er or Alar (; ) is a sub-prefecture-level city surrounded by Aksu Prefecture in Xinjiang Uyghur Autonomous Region, in China. Aral in Uighur means "island." Official spelling is 'Aral' but it is often written as 'Alar'.
Document 15: Daqing: Daqing (; formerly romanized as Taching) is a prefecture-level city in the west of Heilongjiang province, People's Republic of China. The name literally means "Great Celebration". Daqing is known as the Oil Capital of China and has experienced a phenomenal boom since oil was discovered at the Daqing Oil Field in 1959.
ground_truth: no