Question: SummerSlam (1999) was the twelfth annual SummerSlam professional wrestling pay-per-view event produced by which organization, it took place on August 22, 1999, at the Target Center, a multi-purpose arena located in downtown Minneapolis, Minnesota?

Context paragraphs:
SummerSlam (2009): SummerSlam (2009) was a professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE), which took place on August 23, 2009, at Staples Center in Los Angeles, California and was the first of six consecutive annual SummerSlam events to take place at the arena.  It was presented by 7-Eleven.  It was the twenty-second annual SummerSlam event and featured talent from the Raw, SmackDown, and ECW brands.  Eight matches were contested on the event's card.

SummerSlam (2007): SummerSlam (2007) was the twentieth annual SummerSlam professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE).  It was presented by THQ's "Stuntman Ignition".  It took place on August 26, 2007, at the Continental Airlines Arena in East Rutherford, New Jersey and featured talent from each of WWE's three brands: Raw, SmackDown! , and ECW.  Tickets for SummerSlam went on sale December 30 and sold out in forty minutes.

SummerSlam (1988): SummerSlam 1988 was the first annual SummerSlam professional wrestling pay-per-view (PPV) event.  It was produced by the World Wrestling Federation (WWF) and took place on August 29, 1988, in Madison Square Garden, located in New York City, New York.  The pay-per-view was created to help the company compete against rival promotion World Championship Wrestling (formerly Jim Crockett Promotions).  It was one of the first four annual pay-per-view events produced by the WWF, along with WrestleMania, the Royal Rumble, and Survivor Series.

SummerSlam (2002): SummerSlam (2002) was the fifteenth annual SummerSlam professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE).  It was presented by Foot Locker.  It took place on August 25, 2002, at the Nassau Veterans Memorial Coliseum in Uniondale, New York.  With this event, SummerSlam became the first pay-per-view to have events in the three major indoor venues in the New York metropolitan area.  Madison Square Garden hosted the event in 1988, 1991, and 1998.  The Izod Center in East Rutherford, New Jersey hosted the event in 1989, 1997, and later in 2007.

SummerSlam (2000): SummerSlam (2000) was the thirteenth annual SummerSlam professional wrestling pay-per-view (PPV) event produced by the World Wrestling Federation (WWF).  The event was presented by Chef Boyardee and took place on August 27, 2000, at the Raleigh Entertainment and Sports Arena in Raleigh, North Carolina.

SummerSlam (1999): SummerSlam (1999) was the twelfth annual SummerSlam professional wrestling pay-per-view event produced by the World Wrestling Federation (WWF).  It took place on August 22, 1999, at the Target Center in Minneapolis, Minnesota.  This event is one of two events, the three major titles in the WWE (world, intercontinental and tag) all changed hands on the same night, the other being the 2009 edition of .

SummerSlam (1992): SummerSlam (1992) was the fifth annual SummerSlam professional wrestling pay-per-view (PPV) event produced by the World Wrestling Federation (WWF).  It took place on Saturday August 29, 1992, at Wembley Stadium, London, England, but didn't air on pay-per-view until Monday August 31.  The buildup to the pay-per-view consisted of feuds scripted by the WWF's writers.  To date it is the only major WWF pay-per-view to take place outside North America.

SummerSlam (2006): SummerSlam (2006) was the nineteenth annual SummerSlam professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE).  It took place on August 20, 2006, at the TD Banknorth Garden in Boston, Massachusetts, and involved performers from the Raw, SmackDown! , and ECW brands.  This marked the first inter-brand pay-per-view including the ECW brand.

SummerSlam (2011): SummerSlam (2011) was a professional wrestling pay-per-view (PPV) event produced by WWE that took place on August 14, 2011.  It was the twenty-fourth annual SummerSlam event and the third consecutive SummerSlam at Staples Center in Los Angeles, California.  Six matches were scheduled for the event, with a seventh was added during the show when Alberto Del Rio cashed in his "Money in the Bank" briefcase and defeated CM Punk.  SummerSlam attracted a sellout crowd of 17,404 fans at Staples Center in Los Angeles, grossing more than $1 million, marking the highest grossing SummerSlam held at Staples Center.  The event garnered 296,000 pay-per-view buys, down from 350,000 buys the previous year.

Target Center: Target Center is a multi-purpose arena located in downtown Minneapolis, Minnesota.  Target Center hosts major family shows, concerts, sporting events, graduations and private events.  Target Corporation is the original and current naming rights partner of the arena.  Seating over 20,000 for a concert, it contains 702 club seats and 68 suites.

Supporting paragraphs: SummerSlam (1999) Target Center
Answer: World Wrestling Federation (WWF)