Question: Erik Koch formerly competed for the MMA promotion founded in what year?
Context: Invicta Fighting Championships, also known as Invicta FC, is an American professional mixed martial arts (MMA) promotion for female fighters based in the United States.  It was founded in 2012 by Janet Martin a former VP with MMA organization Blackeye Promotions and Shannon Knapp, who held positions at various levels, including executive positions with King of the Cage, World Fighting Alliance, International Fight League, Affliction Entertainment, UFC, and Strikeforce.  It has a strategic partnership with fellow Japanese MMA promotion Jewels. Alliance MMA, Inc. (NASDAQ: AMMA) is a mixed martial arts organization offering premier promotional opportunities for aspiring mixed martial arts (MMA) fighters to showcase their talent and advance to the sport's highest level of professional competition.  Alliance MMA's mission is to identify and develop the next generation of Ultimate Fighting Championship (UFC) and other leading MMA promotion champions including The World Series of Fighting and Bellator. Maximum Fighting Championship is a Canadian mixed martial arts (MMA) promotion based in Edmonton, Alberta.  MFC’s former home, in Canada, is the River Cree Resort and Casino in Enoch, Alberta, located just outside Edmonton, Alberta but has also held events at the Edmonton Expo Centre.  MFC events are broadcast on The Fight Network, AXS TV (formerly HDnet) in North America and most recently TSN2.  MFC is known to be the biggest MMA promotion in Canada and one of the top MMA shows in the World.  MFC has notable Canadian fighters, such as Ryan Jimmo, Graham Spencer, Tom Watson and Douglas Lima, plus MMA veterans, such as Jason MacDonald, Thales Leites, Jay Silva, Trevor Prangley, and Paul Daley. Erik Jon Koch (born October 4, 1988) is an American mixed martial artist who currently fights as a Lightweight in the Ultimate Fighting Championship.  A professional competitor since 2007, he formerly competed for the WEC. Daniel Jeffery Henderson (born August 24, 1970) is an American former mixed martial artist and Olympic wrestler, who last competed as a middleweight in the Ultimate Fighting Championship.  He was the last Strikeforce Light Heavyweight Champion and was the last Welterweight (80 kg ) and Middleweight (95 kg ) champion of Pride Fighting Championships.  Additionally, Henderson was the Brazil Open '97 Tournament Champion, the UFC 17 Middleweight Tournament Champion, the Rings: King of Kings 1999 Tournament Champion and the Pride Weltwerweight Grand Prix Tournament Champion.  During his career, Henderson also challenged for the UFC Middleweight Championship (2x), the UFC Light Heavyweight Championship and the Strikeforce Middleweight Championship.  He was the first mixed martial artist to concurrently hold two titles in two different weight classes in a major MMA promotion.  At the time of his retirement after UFC 204, he was the oldest fighter on the UFC roster.  Known to be one of the greatest mixed martial artists of all time having defeated a total of seventeen MMA world champions across four major MMA promotions (UFC, PRIDE FC, Strikeforce, and RINGS). World Extreme Cagefighting (WEC) was an American mixed martial arts (MMA) promotion founded in 2001.  It was purchased by Zuffa, LLC, the parent company of the Ultimate Fighting Championship (UFC), in 2006.  In its final incarnation, it was made up of 3 weight classes: 135 lb , 145 lb and 155 lb .  To accommodate the smaller fighters, WEC's cage was 25 feet in diameter—5 feet smaller than the standard UFC cage. Tamdan Wade McCrory (born November 5, 1986) is an American professional mixed martial artist who formerly competed in the Middleweight division of the Ultimate Fighting Championship.  A professional competitor since 2006, McCrory has also formerly competed for Bellator MMA and the Cage Fury Fighting Championships. Mizuki Inoue (井上 瑞樹 , inoue mizuki ) , nicknamed Mizuki (魅津希 ) , is a Japanese female kickboxer and mixed martial artist.  Inoue has fought in the kickboxing promotion J-Girls and MMA promotion Jewels.  She won the 2010 Jewels -56 kg Rough Stone Grand Prix tournament at 16 years of age, becoming one of the youngest female champions in a major MMA promotion. Ayaka Hamasaki (浜崎 朱加 , Hamasaki Ayaka ) is a Japanese female kickboxer and mixed martial artist.  She has fought in MMA promotions "Shooto" and Jewels in Japan and Invicta FC in the United States.  Hamasaki won the first Jewels 115 lb Queen tournament to become the first lightweight champion of the promotion.  Hamasaki vacated her title due to injuries on  31, 2013 (2013--) .  She is the current Invicta FC 105 lb atomweight champion.  Hamasaki is the first Asian to win a North American premier MMA promotion title. Valkyrie (ヴァルキリー , Varukirī ) , sometimes styled VALKYRIE in capitals, was a women's mixed martial arts (MMA) promotion.  It was the sister of Japanese MMA promotion Cage Force, both operated by Greatest Common Multiple (GCM) Communication.  Contrary to other Japanese women MMA promotions at the time, it featured a cage instead of a ring and used the same venues as Cage Force.
Answer: 2001