Detailed Instructions: Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.
Q: Context: Spanish National Liberation Front (Spanish: Frente Espanol de Liberacion Nacional), better known by its acronym FELN, was a Spanish Republican antifascist opposition group based in Belgium and France active between 1963 and 1970.
Question: What city is Spanish National Liberation Front located in?
A:
belgium