Question: what is the nationality of The player who was awarded the 2010 South American footballer of the year ?

Context articles: Andrés D'Alessandro
Carlos Valderrama
Alberto Spencer
2009 South American Footballer of the Year
2013 South American Footballer of the Year
South American Footballer of the Year
2011 South American Footballer of the Year
2012 South American Footballer of the Year
2010 South American Summit
2010 South American Footballer of the Year

Andrés Nicolás D'Alessandro (born 15 April 1981) is an Argentine footballer who plays for Internacional as an attacking midfielder.
Carlos Alberto Valderrama Palacio (] ; born 2 September 1961 in Santa Marta, Colombia), also known as "El Pibe" ("The Kid"), is a Colombian former footballer who played as a midfielder.
 A creative playmaker, known for his precise passing, technical skills, and elegance on the ball, he is regarded as one of the best Colombian and South American footballers of all time, and by some as Colombia's greatest player ever; his distinctive hairstyle, as well as talent and skilful playing style made him one of South America's elite and most recognisable footballers in the late 1980s and early 1990s.
 He won the South American Footballer of the Year award in 1987 and 1993, and in 1999, he was also named one of the top 100 players of the 20th century by World Soccer.
 In 2004, he was included in the FIFA 100, a list of the 125 "greatest living footballers" chosen by Pelé to celebrate the 100th anniversary of FIFA.
Alberto Pedro Spencer Herrera (6 December 1937 – 3 November 2006) was an Uruguayan–Ecuadorian footballer who played as a forward, regarded as the best Ecuadorian footballer of all time.
 He is probably best known for his still-standing record for scoring the most goals in the Copa Libertadores, the most important club tournament in South America.
 He was elected the 20th best South American footballer of the 20th century in a poll by the IFFHS in 2004.
 He was known as "Cabeza Mágica " (Spanish for "magic head").
The 2009 South American Footballer of the Year, given to the best football player in South America by Uruguayan newspaper El País through voting by journalists across the continent, was awarded to Juan Sebastián Verón of Estudiantes de La Plata on December 31, 2009.
The 2013 South American Footballer of the Year, given to the best football player in South America by Uruguayan newspaper El País through voting by journalists across the continent, was awarded to Ronaldinho of Atlético Mineiro on December 31, 2013.
The Rey del Fútbol de América ("King of Football of America"), often referred to as the South American Footballer of the Year, is an annual association football award presented to the best footballer in South America over the previous calendar year.
 The award was conceived by Venezuelan newspaper "El Mundo", which awarded it from 1971 to 1985.
 Uruguayan newspaper "El País" took over from 1986 onwards.
The 2011 South American Footballer of the Year, given to the best football player in South America by Uruguayan newspaper El País through voting by journalists across the continent, was awarded to Neymar of Santos on December 31, 2011.
The 2012 South American Footballer of the Year, given to the best football player in South America by Uruguayan newspaper El País through voting by journalists across the continent, was awarded to Neymar of Santos on December 31, 2012.
The 2010 South American summit (officially the 4th Ordinary Meeting of the Council of Heads of State and Government of the Union of South American Nations), took place in Georgetown, Guyana on November 26, 2010.
 Eight heads of state and four foreign ministers of the Union of South American Nations attended the summit.
 During the summit, the leaders signed an additional protocol to the Constitutive Treaty, adding a democratic clause to the charter of the organization.
 The Georgetown summit ended with the Ecuadorian president handing the UNASUR pro-tempore presidency for the next twelve months to his Guyanese counterpart, Bharrat Jagdeo.
The 2010 South American Footballer of the Year, given to the best football player in South America by Uruguayan newspaper "El País" through voting by journalists across the continent, was awarded to Andrés D'Alessandro of Internacional on December 30, 2010.