Question: What county has a city that is adjacent to the capital city of Erskine College's state?

Knowledge 1: Erskine College
Erskine College is a private Christian college in Due West, South Carolina, United States. It offers an undergraduate liberal arts college and a graduate theological seminary. The college was founded in 1839 by the Associate Reformed Presbyterian Church, and its sports teams compete in NCAA Division II as a member of Conference Carolinas. [SEP] Knowledge 2: Charleston, South Carolina
Although the city lost the status of state capital to Columbia in 1786, Charleston became even more prosperous in the plantation-dominated economy of the post-Revolutionary years. The invention of the cotton gin in 1793 revolutionized the processing of this crop, making short-staple cotton profitable. It was more easily grown in the upland areas, and cotton quickly became South Carolina's major export commodity. The Piedmont region was developed into cotton plantations, to which the sea islands and Lowcountry were already devoted. Slaves were also the primary labor force within the city, working as domestics, artisans, market workers, and laborers. [SEP] Knowledge 3: WWNQ
WWNQ is a radio station licensed to Forest Acres, South Carolina, serving the Columbia, South Carolina market. Owned by Midlands Media Group LLC, the station broadcasts a country music format branded as 94.3 The Dude. [SEP] Knowledge 4: Forest Acres, South Carolina
Forest Acres is a city in Richland County, South Carolina, United States. The population was 10,361 at the 2010 census. It is part of the Columbia, South Carolina, Metropolitan Statistical Area.
Knowledge 1: Erskine College
Erskine College is a private Christian college in Due West, South Carolina, United States. It offers an undergraduate liberal arts college and a graduate theological seminary. The college was founded in 1839 by the Associate Reformed Presbyterian Church, and its sports teams compete in NCAA Division II as a member of Conference Carolinas. [SEP] Knowledge 2: Charleston, South Carolina
Although the city lost the status of state capital to Columbia in 1786, Charleston became even more prosperous in the plantation-dominated economy of the post-Revolutionary years. The invention of the cotton gin in 1793 revolutionized the processing of this crop, making short-staple cotton profitable. It was more easily grown in the upland areas, and cotton quickly became South Carolina's major export commodity. The Piedmont region was developed into cotton plantations, to which the sea islands and Lowcountry were already devoted. Slaves were also the primary labor force within the city, working as domestics, artisans, market workers, and laborers. [SEP] Knowledge 3: WWNQ
WWNQ is a radio station licensed to Forest Acres, South Carolina, serving the Columbia, South Carolina market. Owned by Midlands Media Group LLC, the station broadcasts a country music format branded as 94.3 The Dude. [SEP] Knowledge 4: Erskine College–Due West Historic District
The Erskine College–Due West Historic District, is a historic district in Due West, South Carolina, in the United States. It consists of 88 contributing properties and includes part of the campus of Erskine College as well as private homes, businesses, and other buildings in the town of Due West. On March 19, 1982, it was listed in the National Register of Historic Places
Knowledge 1: Erskine College–Due West Historic District
The Erskine College–Due West Historic District, is a historic district in Due West, South Carolina, in the United States. It consists of 88 contributing properties and includes part of the campus of Erskine College as well as private homes, businesses, and other buildings in the town of Due West. On March 19, 1982, it was listed in the National Register of Historic Places [SEP] Knowledge 2: Charleston, South Carolina
Although the city lost the status of state capital to Columbia in 1786, Charleston became even more prosperous in the plantation-dominated economy of the post-Revolutionary years. The invention of the cotton gin in 1793 revolutionized the processing of this crop, making short-staple cotton profitable. It was more easily grown in the upland areas, and cotton quickly became South Carolina's major export commodity. The Piedmont region was developed into cotton plantations, to which the sea islands and Lowcountry were already devoted. Slaves were also the primary labor force within the city, working as domestics, artisans, market workers, and laborers. [SEP] Knowledge 3: Erskine College
Erskine College is a private Christian college in Due West, South Carolina, United States. It offers an undergraduate liberal arts college and a graduate theological seminary. The college was founded in 1839 by the Associate Reformed Presbyterian Church, and its sports teams compete in NCAA Division II as a member of Conference Carolinas. [SEP] Knowledge 4: Forest Acres, South Carolina
Forest Acres is a city in Richland County, South Carolina, United States. The population was 10,361 at the 2010 census. It is part of the Columbia, South Carolina, Metropolitan Statistical Area.

Answer: Richland County