Question: The SERC Reliability Corporation was formed by the merger of four reliability entities, one of which has an executive office located in Birmingham and its headquarters in what city? 
Context: The Midwest Reliability Organization (MRO) began operations on January 1, 2005, as the successor to the Mid-continent Area Power Pool (MAPP), which was formed in 1965.  MRO is one of eight regional electric reliability councils under North American Electric Reliability Corporation (NERC) authority.  NERC and the regional reliability councils were formed following the Northeast Blackout of 1965.  MRO's offices are located in St.Paul, Minnesota.  MRO members include municipal utilities, cooperatives, investor-owned utilities, a federal power marketing agency, Canadian Crown Corporations, and independent power producers. The Electric Reliability Council of Texas (ERCOT) manages the flow of electric power on the Texas Interconnection that supplies power to 24 million Texas customers – representing 85 percent of the state's electric load.  ERCOT is the first independent system operator (ISO) in the United States and one of nine ISOs in North America.  ERCOT works with the Texas Reliability Entity (TRE), one of eight regional entities within the North American Electric Reliability Corporation (NERC) that coordinate to improve reliability of the bulk power grid. The North American Electric Reliability Corporation (NERC) is a nonprofit corporation based in Atlanta, Georgia, and formed on March 28, 2006, as the successor to the North American Electric Reliability Council (also known as NERC).  The original NERC was formed on June 1, 1968, by the electric utility industry to promote the reliability and adequacy of bulk power transmission in the electric utility systems of North America.  NERC's mission states that it is to "ensure the reliability of the North American bulk power system." Fuqi International (formerly traded as NASDAQ: FUQI ) is a designer of precious metal (gold and platinum) jewelry for the luxury goods market in China.  It also manufactures jewelry items that contain diamonds and other precious stones on a custom-order basis.  Fuqi is a Delaware corporation with its principal executive office located in Shenzen, China.  Fuqi operates through its wholly owned subsidiary, Fuqi International Holdings Co., Ltd., a British Virgin Islands corporation and its wholly owned subsidiary, Shenzhen Fuqi Jewelry Co., Ltd., a company established under the laws of China. The Northeast Power Coordinating Council (NPCC) was formed January 19, 1966, as a successor to the Canada–United States Eastern Interconnection (CANUSE).  NPCC is one of nine regional electric reliability councils under North American Electric Reliability Corporation (NERC) authority.  NERC and the regional reliability councils were formed following the Northeast Blackout of 1965.  NPCC's offices are located in New York City, New York. The Alaska Systems Coordinating Council (ASCC) formed in 1983, and serves the two isolated interconnections within the State of Alaska.  The Alaska Systems Coordinating Council (ASCC) is an affiliate North American Electric Reliability Corporation (NERC) member. ReliabilityFirst (RF) is one of the eight Federal Energy Regulatory Commission (Commission)-approved Regional Entities responsible for ensuring the reliability of the North American Bulk-Power System, pursuant to the Energy Policy Act of 2005.  ReliabilityFirst performs this function pursuant to and under its delegation agreement with North American Electric Reliability Corporation (NERC), which is the Commission-approved electric reliability organization.  NERC and the Regional Entities are non-governmental, self-regulatory organizations that were created in recognition of, among other things, the complex, interconnected, and international nature of the North American Bulk Power-System. Southern Company is an American gas and electric utility holding company based in the southern United States.  It is headquartered in Atlanta, Georgia, with executive offices also located in Birmingham, Alabama.  The company is currently the second largest utility company in the U.S., in terms of customer base.  Through its subsidiaries it serves 9 million gas and electric utility customers in nine states.  Southern Company’s regulated regional electric utilities serve a 120000 sqmi territory with 27000 mi of distribution lines. The Florida Reliability Coordinating Council (FRCC) is one of 8 Regional Entities delegated authority to insure reliability by North American Electric Reliability Corporation (NERC) in North American and was formed on September 16, 1996.  The area served by FRCC was previously served by SERC Reliability Corporation (SERC).  NERC and the regional reliability councils were formed following the Northeast Blackout of 1965.  FRCC's offices are located in Tampa, Florida. The SERC Reliability Corporation (SERC) is one of eight regional electric reliability councils under North American Electric Reliability Corporation (NERC) authority.  NERC and the regional reliability councils were formed following the Northeast Blackout of 1965.  SERC was formed on April 29, 2005, as the successor to the Southeast Electric Reliability Council (also known as SERC).  The original SERC was formed January 14, 1970 by the functional merger of four smaller reliability entities: the CARVA Pool, Tennessee Valley Authority (TVA), Southern Company (SOCO) and the Florida Electric Power Coordinating Group (FEPCG).  On September 16, 1996, the SERC member companies formerly represented by FEPCG formed the Florida Reliability Coordinating Council (FRCC) and separated from SERC.  SERC's offices are located in Charlotte, NC.
Answer: Atlanta