Question: Which organization held the European championships that Maxime De Zeeuw played in in 2011?

Context articles: BALR.
List of WAKO Amateur European Championships
Rhythmic Gymnastics European Championships
EuroBasket 2011
Maxime De Zeeuw
Demy de Zeeuw
W.A.K.O. European Championships 2006 (Lisbon)
Rhythmic Gymnastics Junior European Championships
4 Fun
Carolina Kostner

BALR.
 is a Dutch brand founded in 2013 by professional football players Demy de Zeeuw, Eljero Elia, Gregory van der Wiel and internet entrepreneurs Ralph de Geus and Juul Manders.
 De Zeeuw came up with the concept during one of his long car trips when he played for FC Spartak Moscow in Russia.
The first W.A.K.O. Amateur European Championships were organized by George Bruckner and held in Vienna in 1977 and between 1977 and 1982 the organization held a European Championships each year.
 W.A.K.O. began to change the timing of the championships after 1982, making sure that they were every two years, thus (generally) falling between world championships.
 In 1994 W.A.K.O. first started introduce two European championships to be held in the same year.
The Rhythmic Gymnastics European Championships are the European championships for the sport of rhythmic gymnastics.
 They were first held in 1978.
 The European Championships and the European Junior Championships were united in 1993.
 Prior to 2006, they were called the European Rhythmic Gymnastics Championships.
 The competition is organised by the European Union of Gymnastics.
EuroBasket 2011 was the 37th men's European Basketball Championship, held by FIBA Europe.
 The competition was hosted by Lithuania.
 This was the second time EuroBasket had been held in Lithuania, the country having also hosted the 1939 championship.
 FIBA Europe asserted that Lithuania managed to organize the best European championship in its history.
 The top two teams are guaranteed spots at the 2012 Summer Olympics.
Maxime De Zeeuw (born April 27, 1987) is a Belgian professional basketball player who plays for EWE Baskets Oldenburg of the Basketball Bundesliga.
 De Zeeuw usually plays at the power forward position.
 He has also been a member of the Belgian national basketball team, whom he played with at the European championships of 2011 and 2013.
Demy Patrick René de Zeeuw (] ; born 26 May 1983) is a Dutch footballer who last played for NAC Breda and the Netherlands national football team.
 He is a defensive midfielder described as a good tackler and a gifted passer of the ball.
 He previously played for AGOVV, Go Ahead Eagles, AZ and AFC Ajax.
 While at AZ he was a key player in the squad that won the 2008–09 Dutch league, the club's first championship victory in 28 years.
 Following this success he transferred to Ajax, with whom he won the 2009–10 Dutch Cup, and the 2010–11 Dutch league title.
W.A.K.O. European Championships 2006 (Lisbon) were the joint eighteenth European kickboxing championships held by the W.A.K.O. organization (the other event would be held the next month in Skopje, Macedonia) and the second to be held in Portugal and the city of Lisbon.
 The event was open to amateur men and women from across Europe although a number of professional fighters such as Luis Reis would take part.
 All in all, in was the largest ever European championships with around 560 athletes from 31 countries taking part.
 One of the reasons for the higher numbers being that W.A.K.O. had merged had recently merged with the I.K.A.S. and took on many of the I.K.A.S. organization's fighters.
 Another reason was that some countries were allowed multiple competitors per weight division in the Full-Contact and Semi-Contact categories.
The Rhythmic Gymnastics Junior European Championships are the European championships for junior gymnasts for the sport of rhythmic gymnastics.
 They were first held in 1987.
 Prior to 1993, they were held as a separate event.
 Since the 1993 edition in Bucharest, Romania, the Junior European Championships were integrated to the senior European Championships.
 The competition is organized by the European Union of Gymnastics.
4 Fun was a Dutch boy band consisting of , , and .
 They were already known as soap opera actors.
 Jimmy Geduld had acted in "Goede tijden, slechte tijden" (in Dutch Good Times, Bad Times), both Winston Gerschtanowitz and Michiel de Zeeuw played in "Goudkust" (meaning Gold Coast in Dutch) and Chris Zegers was in "Onderweg naar Morgen" (meaning The way to tomorrow).
 The band was formed as a competition to the girl band trio Linda, Roos & Jessica also of in competition "Goede tijden, slechte tijden".
Carolina Kostner (] ; born February 8, 1987) is an Italian figure skater.
 She is the 2014 Olympic bronze medalist, the 2012 World champion, a five-time European champion (2007–2008, 2010, 2012–2013), and the 2011 Grand Prix Final champion.
 She is also a medalist at five other World Championships (2005, 2008, 2011, 2013–14), five other European Championships (2006, 2009, 2011, 2014, 2017), and three other Grand Prix Finals (2007, 2008, 2010), the 2003 World Junior bronze medalist, and an eight-time Italian national champion.
 Kostner has won ten medals at the European championships, most recently in 2017, and is the most decorated female singles skater in the history of the European Championships.