Question: What is the sixth album of Judas Priest's?
Sentence (from "Judas Priest"): Despite an innovative and pioneering body of work in the latter half of the 1970s, the band struggled with indifferent record production, repeated changes of drummer and lack of major commercial success or attention until 1980, when they adopted a more simplified sound on the album "British Steel", which helped shoot them to rock superstar status.
Relevant evidence: No