Question: What is the nationality of the actor who plays central character in Knight of Cups ? 

Context paragraphs:
Knight of Cups (film): Knight of Cups is a 2015 American experimental drama film written and directed by Terrence Malick and produced by Nicolas Gonda, Sarah Green and Ken Kao.  The film features an ensemble cast, starring Christian Bale as the central character.

Dániel Tőzsér: Dániel Tőzsér (] ; born 12 May 1985) is a Hungarian footballer who plays for Debrecen and the Hungarian national football team as a midfielder.  Tőzsér is left-footed and plays central, defensive or on the left side of midfield.  He is known for his impressive free-kick abilities.

Hakkı Hocaoğlu: Hakkı Hocaoğlu (born 1 February 1975 in Hatay) is a Turkish football player.  He currently plays central defender for Giresunspor in the TFF First League.

Leston Paul: Leston Peter Paul (born 11 March 1990) is a Trinidad and Tobagoprofessional footballer who currently plays central midfield for C.D. Pasaquina in the Salvadoran Premier Division.  He previously played for Central F.C. in the Trinidad and Tobago (TT) Pro League where hee led the "Sharks" to a hat trick of TT Pro League titles (2014-15, 2015-16 and 2016-17) and back to back CFU Club Championship triumphs in the 2014-15 and 2015-16 seasons.  With 13 full international caps to his name, Paul has lined up for the Trinidad and Tobago national football team in the 2018 FIFA World Cup qualification in CONCACAF.  He was also the captain of the Trinidad and Tobago National U-17 and U-20 teams that featured in the 2007 FIFA U-17 World Cup and 2009 FIFA U-20 World Cup.

Lwazi Maziya: Lwazi Maziya (born 22 April 1983) is a Swazi footballer with Mbabane Swallows of the Swazi Premier League and the Swaziland national football team.  He attended Alabama A&M University in the United States on a sports scholarship and studied Computer Science graduating summa cum laude.  He plays central midfield and has won the Swazi Footballer of The Year Award two times.  He is married to Dumsile Mdluli.  He attended Manzini Nazarene High School where he excelled both academically and in sports particularly football.

Amir Damar Koku: Amir Damer Koku (born 8 December 1979 in Khartoum, Sudan) is a Sudanese footballer who plays central defender.

Marko Janjetović: Marko Janjetović (born 22 April 1984) is a Croatian football midfielder, currently playing for NK Hrvatski dragovoljac.  He plays central and defensive midfielder position.

Christian Bale: Christian Charles Philip Bale (born 30 January 1974) is an English actor.  He has starred both in blockbuster films and smaller projects from independent producers and art houses.

Liam King (footballer): Liam King (born 31 December 1987) is an English footballer who plays central midfield.

Erivelton Gomes Viana: Erivelton Gomes Viana aka Erivelton (born April 2, 1978) is a Brazilian footballer, born in Carvalhos, Minas Gerais, who plays central back.

Supporting paragraphs: Knight of Cups (film) Christian Bale
Answer: English