Question: When was the American businessma who co-founded Atlanta United FC born? 

Context paragraphs:
Carlos Bocanegra: Carlos Manuel Bocanegra (born May 25, 1979) is a retired American professional soccer player.  A two-time MLS Defender of the Year, Bocanegra also played professionally in England, Scotland, France, and Spain.  He earned over 100 caps with the United States, serving as captain for six years.  He currently is serving as technical director for Atlanta United FC.

Georgia World Congress Center: The Georgia World Congress Center (GWCC) is a convention center in Atlanta, Georgia, USA.  Enclosing some 3.9 million ft (360,000 m) in exhibition space and hosting more than a million visitors each year, the GWCC is the third-largest convention center in the United States.  Opened in 1976, the GWCC was the first state-owned convention center established in the United States.  The center is operated on behalf of the state by the Georgia World Congress Center Authority, which was chartered in 1971 by Georgia General Assembly to develop an international trade and exhibition center in Atlanta.  The authority later developed the Georgia Dome, Centennial Olympic Park, and Mercedes-Benz Stadium, which replaced the Georgia Dome.  The Georgia Dome was closed on March 5, 2017 and is scheduled for implosion on November 20, 2017 while Mercedes-Benz Stadium officially opened on August 26, 2017.  While the GWCCA owns Mercedes-Benz Stadium, AMB Group, the parent organization for the National Football League's Atlanta Falcons and Major League Soccer's Atlanta United FC, is responsible for the stadium's operations.

Andrew Carleton: Andrew Carleton (Born June 22, 2000) is an American soccer player who plays for Atlanta United FC.  Carleton has featured on several United States youth national teams.  He has two brothers named Alan and Johnny and two sisters named Erin and Erica.  Alan plays for Atlanta United's youth team, Erin plays for Concorde Fire FC, and Johnny and Erica play for Southern Soccer Association.

Atlanta United FC: Atlanta United FC is an American professional soccer club based in Atlanta, Georgia, that began play in 2017 as a member of the Eastern Conference of Major League Soccer.  The club, which was announced by the league as an expansion franchise on April 16, 2014, is owned and operated by Home Depot co-founder and Atlanta Falcons owner Arthur Blank.  The team originally played at Bobby Dodd Stadium, but played their first game at the new Mercedes-Benz Stadium on September 10, 2017.

Arthur Blank: Arthur M. Blank (born September 27, 1942) is an American businessman and a co-founder of The Home Depot.  Today he is known for his philanthropy, his ownership of the Atlanta Falcons in the National Football League, and his ownership of Atlanta United in Major League Soccer.

2016 MLS Re-Entry Draft: The two-stage 2016 MLS Re-Entry Draft took place on December 16, 2016 (Stage 1) and December 22, 2016 (Stage 2).  All 22 Major League Soccer clubs were eligible to participate.  The priority order for the Re-Entry Draft was reverse order of finish in 2016, taking into account playoff performance.  The two 2017 expansion teams, Atlanta United FC and Minnesota United FC, had selections 21 and 22, respectively.

2017 Atlanta United FC season: The 2017 Atlanta United FC season is the first season of Atlanta United FC's existence, and their first season in Major League Soccer, the top-tier of American soccer.  United played at Bobby Dodd Stadium for the first half of the season, then moved into Mercedes-Benz Stadium once it was completed.  Atlanta United is coached by Gerardo Martino.  Outside of MLS, Atlanta United participated in the 2017 U.S. Open Cup, as well as various preseason competitions.

2016 MLS Expansion Draft: The 2016 MLS Expansion Draft was a special draft for the Major League Soccer expansion teams Atlanta United FC and Minnesota United FC.  Atlanta United was selected to pick first by an "Expansion Priority Draft" conducted on October 16, 2016.  Protected rosters are based on an MLS release from December 12, 2016.

2016 Minnesota United FC season: The 2016 season was Minnesota United FC's seventh season of existence, and their sixth consecutive and final season playing in the North American Soccer League, the second division of the American soccer pyramid.  In 2017 Minnesota United FC will be joining MLS as an expansion team along with Atlanta United FC.

Mercedes-Benz Stadium: Mercedes-Benz Stadium is a multi-purpose retractable roof stadium located in Atlanta, Georgia.  The home of the Atlanta Falcons of the National Football League (NFL) and Atlanta United FC of Major League Soccer (MLS), it replaced the adjacent Georgia Dome, the Falcons' home stadium for a quarter century, from 1992 through 2016.

Supporting paragraphs: Atlanta United FC Arthur Blank
Answer: September 27, 1942