Input (grade 13): Sergio Leonel "Kun" AgÃ 1\/4 ero del Castillo (; born 2 June 1988) is an Argentine footballer of Lebanese descent who currently plays as a striker for AtlÃ tico Madrid and the Argentine national team.
Output (grade 5): Sergio AgÃ 1\/4 ero (born 2 June 1988) is an Argentine football player. He plays for AtlÃ tico Madrid and Argentina national team.