Title: Wa Airport
Content:  Wa Airport is an airport serving Wa, a city in the Upper West Region of Ghana which is also its capital. The airport is operated by Ghana Airports Company Limited.
Title: Wa, Ghana
Content:  Wa is a town and the capital of Wa Municipal District and the Upper West Region of northern Ghana. Wa has a 2012 settlement population of 102,446. Features of the town include several churches and mosques, the Wa-Na Palace, the St. Andrew's Catholic cathedral, the University for Development Studies (UDS), a museum and a nearby hippopotamus sanctuary. The geography of Wa is notable for the dramatic monadnock Ombo Mountain which is located around Kaleo and visible from much of the Wa town. Other notable towns around Wa region include Naaha and Ga. The town serves as a transportation hub for the Upper West region, with major roads leading north to Hamile, and northeast to Tumu and the Upper East Region. There is also a small airport, the Wa Airport.
Title: Wau, South Sudan
Content:  Wau (Arabic: واو Wāw; also known as Wow, Waw, or Wau Town) is a city in northwestern South Sudan, on the western bank of the Jur River, that serves as capital for Western Bahr el Ghazal (and formerly Wau State). It lies approximately 650 km northwest of the capital Juba. A culturally, ethnically and linguistically diverse urban center and trading hub, Wau is also the former headquarters of Western Bahr el Ghazal.
Title: Wa Municipal District
Content:  Wa Municipal District is one of the eleven districts in Upper West Region, Ghana. Originally created as an ordinary district assembly in 1988 when it was known as Wa District, until two parts of the district were later split off by a decree of president John Agyekum Kufuor in July 2004 to create Wa East District (from the east) and Wa West District (from the west) respectively; thus the remaining part was later elevated to municipal district assembly status on the same year to become Wa Municipal District. The municipality is located in the southern part of Upper West Region and has Wa as its capital town, which also serves as the regional capital of the Upper West Region.
Title: Wau State
Content:  The capital of Wau State is the city of Wau. The city of Wau is located on the Jur River in the state, and it is the second largest city in the country with an estimated population of 151,320 people in 2008. Wau, South Sudan has its own airport, and the city is located 650 kilometers (404 miles) from Juba, the capital.
Title: Wa West District
Content:  Wa West District is one of the eleven districts in Upper West Region, Ghana. Originally it was formerly part of the then-larger Wa District in 1988; until two parts of the district were later split off to create Wa East District (from the east) and Wa West District (from the west) respectively on July 2004; thus the remaining part was elevated to municipal district assembly status on the same year to become Wa Municipal District. The district assembly is located in the southern part of Upper West Region and has Wechiau as its capital town.
Title: Wau River
Content:  The Wau River, or Wau Nahr (sometimes spelled Waw or Wow), is a river in South Sudan. It shares its name with Wau, the state capital of Western Bahr el Ghazal, where the river is located east of the international border with the Central African Republic.
Title: Waja
Content:  Waja (also known as Waja Temuga) is a town in northern Ethiopia. Located in the Debubawi Zone of the Tigray Region, south of the city of Alamata, Waja has a latitude and longitude of 12.28333°N, 39.6°W with an elevation of 1471 meters above sea level. It is one of two towns in Alamata woreda. Records at the Nordic Africa Institute website provide details of the primary school in 1968. Based on figures from the Central Statistical Agency in 2005, Waja has an estimated total population of 11,020, of whom 5,373 are men and 5,647 are women. The 1994 census reported it had a total population of 6,050, of whom 2,732 were men and 3,318 were women.
Title: Weʽa
Content:  The hills form a valley, which constitutes an extension of a wadi. Wea sits at an altitude of 455 m above sea level in low-shrouded mountains and hills. The outskirts of the town have served as a local agricultural center.
Title: Weigh house
Content:  The Waag is located on the Waterkant in Paramaribo, Suriname, and an Unesco World Heritage Site.

Question: What is Wa the capital of?
Answer: Upper West Region.