Question: Where are the headquarters of the company who owns Black River Plantation House?

<P0-S0> Carroll Place, also known as Old Carroll Place, is a historic plantation house located near St. George, Dorchester County, South Carolina. <P0-S1>  Research completed circa 2012 at the South Carolina Archives in Columbia S.C. shows the house was built circa 1780, and is a plain two-story, Georgian I-house dwelling. <P0-S2>  It is sheathed in clapboard single house and rests upon low brick pillars. <P0-S3>  It has a hip roofed verandah supported by six wooden posts. <P0-S4>  Its builder was likely Thomas Ferguson or David Campbell. <P0-S5>  In 2008 the house was donated to the Dorchester County Historical Society by current owners Fitzhugh Lee Sweatman Jr and his wife, Martha Westbury-Sweatman. <P0-S6>  The Dorchester County Historical Society under took an extensive restoration of the Colonial Era Plantation House and when completed, re-designated the house as the Koger-Murray-Carroll house for three of its previous owners who served in the South Carolina General Assembly: Joseph Koger (married the daughter of David Campbell and inherited the house on her death), Soule Murray (purchased the house and land from Joseph Koger), and James Parsons Carroll (purchased the property circa 1850). <P0-S7>  James Parsons Carroll also served in the South Carolina Court of Equity as a Chancellor and was a signer of the South Carolina Ordinance of Secession. <P0-S8>  Circa 1974 the house was added to the National Historical Register of Places as the "Old Carroll Place" for which it had become known. <P0-S9>  The last owner/occupants of the house were the late Fitzhugh Lee Sweatman Sr and his wife Eulalie Knight-Sweatman. <P0-S10>  Circa 1970 Mr and Mrs. Sweatman Sr built a smaller one story house off to the side of the Plantation House. <P0-S11>  Mr. Sweatman Sr died on the property in 1975. <SEP> <P1-S0> The International Paper Company () is an American pulp and paper company, the largest such company in the world. <P1-S1>  It has approximately 55,000 employees, and it is headquartered in Memphis, Tennessee. <SEP> <P2-S0> Black River Plantation House, also known as Rice Hope Plantation, Black River; and International Paper Company House, is a historic home located near Georgetown, Georgetown County, South Carolina. <P2-S1>  It was built in 1919, and is a 2 1/2-story, Neo-Classical Revival frame house. <P2-S2>  It is clad in weatherboard and has a hipped roof. <P2-S3>  The riverside façade features a portico supported by four columns with Corinthian order capitals. <P2-S4>  The house was purchased by the International Paper Company in 1942, and used by company employees and guests as a resort. <SEP> <P3-S0> Green River Plantation is a historic plantation house on over 260 acres located near Columbus, Polk County, North Carolina. <P3-S1>  The oldest section of the "Big House" was built between the years 1804-1807, and is a two-story, four bay, Late Federal style frame dwelling. <P3-S2>  A later two-story, four bay, brick Greek Revival style dwelling was built beside the original structure in the mid-19th century. <P3-S3>  The two sections were joined in the late 19th century by a two-story section and grand staircase to form a structure that is over 10,000 square feet in size and boasts over 42 rooms and spaces. <P3-S4>  The plantation house was built by Joseph McDowell Carson, son of Col. John Carson, who built Carson House at Marion, North Carolina. <P3-S5>  The later-built section of the home was the residence of Samuel Price Carson, North Carolina State Senator and U.S. Federal Representative, and younger brother of Joseph McDowell Carson.