Question: In what year was the album Clockwork Indigo released which featured both The Underachievers and American Hip Hop group Flatbush  Zombies?
Sentence (from "Flatbush Zombies"): Flatbush Zombies (stylized as Flatbush ZOMBiES) is an American hip hop group from the Flatbush section of Brooklyn, New York City, formed in 2010.
Relevant evidence: Yes