Question: Where is the group, which organised the Mexican referendums, 1989, based?
Sentence (from "Zapatista Army of National Liberation"): The Zapatista Army of National Liberation ("Ejército Zapatista de Liberación Nacional", EZLN), often referred to as the Zapatistas ] , is a left-wing revolutionary political and militant group based in Chiapas, the southernmost state of Mexico.
Relevant evidence: Yes