Task: Question Answering
Input (English): Context_1 : Cangwu County is a county of Guangxi, China. It is under the administration of Wuzhou city. Context_2 : The Macheng NO.1 High School(),of which predecessor is Macheng County Higher Primary School(麻城县立高等小学堂),was rebuilt from Tingzhou the City South Examination Hall(城南亭州试院)in 1905by Qu Zihou(屈子厚,1851─1911),the Qing Dynasty's former Speaker of the Macheng County Counciland Director of Eduction,is a noted and key high school in Hubei Province. Context_3 : Teng County or Tengxian () is a county of eastern Guangxi, China. It is under the administration of Wuzhou City. , it had a population of 930,000 residing in an area of 3943 km2 . Context_4 : Wuzhou Changzhoudao Airport () (IATA: WUZ, ICAO: ZGWZ) is an airport serving the city of Wuzhou in Guangxi Zhuang Autonomous Region, China. A new airport, Wuzhou Xijiang Airport, is being constructed to replace Changzhoudao Airport. It is expected to open in 2017. Context_5 : Cenxi () is a county-level city under the administration of Wuzhou City, in the east of Guangxi, People's Republic of China. Context_6 : Changzhou District () is a district of Guangxi, China. It is under the administration of Wuzhou city. Context_7 : Wanxiu District is a district of Guangxi, China. It is under the administration of Wuzhou city. Context_8 : Dieshan District is a district of Wuzhou city, Guangxi, China. Context_9 : Mengshan County () is a county under the administration of Wuzhou City in northeastern Guangxi, China. Its seat is located in Mengshan Town. Context_10 : Macheng () is a city in northeastern Hubei province, People's Republic of China, bordering the provinces of Henan to the north and Anhui to the northeast. It is a county-level city under the administration of Huanggang City and abuts the south side of the Dabie Mountains. The city's administrative area covers about 3600 km2 , and includes some 700 villages and small towns. Total population was 1.2 million at the last census. fact_1 : Macheng () is a city in northeastern Hubei province, People's Republic of China, bordering the provinces of Henan to the north and Anhui to the northeast. fact_2 :  It is a county-level city under the administration of Huanggang City and abuts the south side of the Dabie Mountains. fact_3 : Cenxi () is a county-level city under the administration of Wuzhou City, in the east of Guangxi, People's Republic of China. Question: Which city is closest to Wuzhou City, Macheng or Cenxi?
Output (English): Cenxi