Question: What was the 2012 population of the city in which the Tetteh Quarshie Interchange passes through?
Context: The George Walker Bush Highway is a six-lane, 14 km highway in Accra in the Greater Accra Region of Ghana.  It is also known as the Mallam–Tetteh Quashie Highway as the highway links the urban town of Mallam to the Tetteh Quarshie Interchange.  The construction of the highway was financed by the Millennium Challenge Account.  The highway was officially opened to motorists on 15 February 2012 by President John Atta Mills.  The highway forms part of the N1 highway. Accra is the capital and most populous city of Ghana, with an estimated urban population of 2.27 million as of 2012 .  It is also the capital of the Greater Accra Region and of the Accra Metropolis District, with which it is conterminous.  Accra is furthermore the anchor of a larger metropolitan area, the Greater Accra Metropolitan Area (GAMA), which is inhabited by about 4 million people and is the thirteenth-largest metropolitan area in Africa. Welcome is a city in Martin County, Minnesota, United States.  The population was 686 at the 2010 census.  The U.S. Census Bureau estimated 2012 population is 678. Coyote Flats is a city located in Johnson County in the U.S. State of Texas.  According to the 2012 Population Estimate of the United States Census, the population was 312. The Crestview-Fort Walton Beach-Destin, FL Metropolitan Statistical Area, as defined by the United States Census Bureau, is a metropolitan area consisting of two counties in northwest Florida, anchored by the city of Crestview, Florida and Ft Walton Beach, Florida.  As of the 2010 census, the MSA had a population of 235,865, and a 2012 population estimate of 247,665. Tuvalu is a small island nation in the South Pacific, located North of Fiji and North West of Samoa.  The population at the 2012 census was 10,837 (2012 Population & Housing Census Preliminary Analytical Report).  Tuvalu has a written constitution which includes a statement of rights influenced by the United Nations Universal Declaration of Human Rights and the European Convention on Human Rights.  While most human rights in Tuvalu are respected, areas of concern include women’s rights and freedom of belief, as well as diminishing access to human rights in the face of global warming.  The latter has played a major role in the implementation of human rights actions in Tuvalu given its geographical vulnerability and scarce resources. The Tetteh Quarshie Interchange is a cloverleaf interchange carrying a six-lane motorway that links the Liberation Road from 37 Military Hospital to the Pantang junction through Madina in Accra, Ghana.  The interchange was commissioned for vehicular use on 27 February 2005 by then president of Ghana, John Agyekum Kufuor. The N4 or National Highway 4 is a national highway in Ghana that begins at the Tetteh Quarshie Interchange in Accra and runs through Adenta, Koforidua, and Asokore to join the N6, which continues on to Kumasi.  It serves as an alternate route from Accra to Kumasi, with a total distance of 110 kilometers (68 miles).  The route runs through the Greater Accra and Eastern regions of Ghana. Tetteh Quarshie Memorial Hospital is a public Hospital located in Mampong Akuapem in the Eastern Region of Ghana. Tetteh Quarshie (1843 – 25 December 1892) was a pre-independence Ghanaian agriculturalist and the person directly responsible for the introduction of cocoa crops to Ghana, which today constitute one of the major export crops of the Ghanaian economy.  Quarshie traveled to the island of Fernando Po (now Bioko in Equatorial Guinea) in 1870 and returned in 1876 to Ghana in order to introduce the crop.  He died on Christmas Day 1892.
Answer: 2.27 million