Question: Sierra was co-written by the duo signed to what label?
Sentence (from "Sobrenatural (Alexis &amp; Fido album)"): Artists featured on the album are Ñejo & Dalmata, Toby Love, De La Ghetto,Voltio, Jadiel, Erick Right and Los Yetzons, a duo signed on to their Wild Dogz label.
Relevant evidence: No