Question: From which city in Norway hails the black metal band which played at the Bloodstock Open Air heavy metal festival in Walton-on-Trent?
Sentence (from "Immortal (band)"): Immortal is a black metal band from Bergen, Norway, founded in 1991 by frontman and bassist Abbath Doom Occulta (Olve Eikemo) and guitarist Demonaz Doom Occulta (Harald Nævdal).
Relevant evidence: Yes