Question: Which recent graduate of Grêmio F.B.P.A. Academy has gone on to become a defensive midfielder for the Brazil national team?

Context paragraphs:
Lucas Leiva: Lucas Pezzini Leiva (born 9 January 1987), known as Lucas, is a Brazilian professional footballer who plays as a defensive midfielder for Italian club Lazio and the Brazil national team.

Tite (football manager): Adenor Leonardo Bacchi (born 25 May 1961), commonly known as Tite (] ), is a Brazilian football manager and former player, currently managing the Brazil national team.  He has played for and managed a number of clubs, perhaps most famous for his successful stint at Corinthians, which he trained from 2004 to 2005; then from 2010 to 2013, when he led the team to their first Copa Libertadores title and a second FIFA Club World Cup title.  After taking a sabbatical year to study more about modern football in 2014, he returned to Corinthians from 2015 until June 2016, when he became coach for the Brazil national team.  Known for his eloquence, Tite is well known for his rhetoric and his demeanor off the pitch.

Ramires: Ramires Santos do Nascimento (] ; born 24 March 1987), known simply as Ramires, is a Brazilian professional footballer who plays for Chinese club Jiangsu Suning and the Brazil national team.  A midfielder, he is comfortable playing in either the centre or right midfielder position.  He normally plays as a box-to-box midfielder role because of his energy in supporting defensive and offensive play.

Grêmio F.B.P.A. Academy: Grêmio F.B.P.A. Academy is the youth set up of Grêmio.  Is composed of a feeder team, known as "Transition team", and several youth teams from the age group of under-7 to the under-20, and is considered one of the most prolific football academies in Brazil as also in the world.  Notable graduates in recent years include former FIFA World Cup and FIFA Ballon d'Or winner Ronaldinho, Brazil national team and Juventus winger Douglas Costa, Lazio midfielder Lucas Leiva and current first team players Marcelo Grohe and Luan, among many others.

David Luiz: David Luiz Moreira Marinho (born 22 April 1987), known as David Luiz, is a Brazilian professional footballer who plays for English club Chelsea and the Brazil national team.  Primarily a central defender, he can also be deployed as a defensive midfielder.

History of the Brazil national football team: The history of the Brazil national football team began with the team's first international match in 1914, a 0–3 loss to Argentina.  Brazil played in the first FIFA World Cup in 1930.  The Brazil national team has been successful throughout its history, winning the FIFA World Cup five times since 1958.

Luiz Gustavo: Luiz Gustavo Dias (born 23 July 1987) is a Brazilian professional footballer who plays as a defensive midfielder for Ligue 1 club Olympique de Marseille and the Brazil national team.

Emerson (footballer, born 1976): Émerson Ferreira da Rosa (born 4 April 1976), simply known as Emerson, is a Brazilian footballer who currently plays for Miami Dade FC as a defensive midfielder.  He played 73 games for the Brazil national team between 1997 and 2006, winning the 1999 Copa America and the 2005 FIFA Confederations Cup, also reaching the 1998 World Cup Final.  With Brazil, he has taken part in two FIFA World Cups (1998, 2006, missing out on the 2002 FIFA World Cup due to injury), two Copa Américas (1999, 2001), and three Confederation Cups (1999, 2003, 2005).

Casemiro: Carlos Henrique José Francisco Venâncio Casimiro (born 23 February 1992), known as Casemiro, is a Brazilian footballer who plays for Spanish club Real Madrid and the Brazil national team as a defensive midfielder.

Michel Vautrot: Michel Vautrot (born October 23, 1945 in Saint-Vit, Doubs) is a retired football (soccer) referee from France.  He is mostly known for officiating five matches in the FIFA World Cup: two in 1982 and three in 1990.  He refereed the Club World Cup final in 1983 on National Stadium Tokyo between Hamburg S.V. (West Germany) and Grêmio F.B.P.A. (Brazil).  He refereed three matches in the European Championship, one in 1984 and two in 1988, including the final between Soviet Union and Netherlands.  In addition, he refereed the 1986 European Cup Final between Steaua Bucharest and Barcelona.

Supporting paragraphs: Grêmio F.B.P.A. Academy Lucas Leiva
Answer: Lucas Leiva