Question: What is the nationality of this footballer who plays for German club FC Bayern Munich born in 1988, who was added during the 2012–13 FC Bayern Munich season?
Sentence (from "Javi Martínez"): Javier "Javi" Martínez Aginaga (] ; born 2 September 1988) is a Spanish footballer who plays for German club FC Bayern Munich as a defensive midfielder or a central defender.
Relevant evidence: Yes