Question: Gianni Minà created a documentary on the leader and spokesman of what Mexican insurgent group?
Sentence (from "Subcomandante Marcos"): Marcos has used several other pseudonyms; he referred to himself as Delegate Zero during the 2006 Mexican Presidential Campaign, and in May 2014 announced that Subcommandante Marcos "no longer exists," adopting the name Subcomandante Galeano instead.
Relevant evidence: No