Question: Church Age is the fourth album by Mr. Del, as a play on which traditional logo that adorns many hip hop albums, the cover of this album features which warning label first introduced by the Recording Industry Association of America (RIAA) in 1986  logo that says "Spiritual Advisory Gospel Content", 
Sentence (from "Church Age (album)"): Perhaps as a play on the traditional Parental Advisory logo that adorns many hip hop albums, the cover of this album features a Parental Advisory-like logo that says "Spiritual Advisory Gospel Content" [which has led some websites that sell the album to mistakenly label it as having explicit lyrics].
Relevant evidence: Yes