Question: Which album did Slayer discography  released on Released on July 5, 1988 before he was signed to Rubin's new label, Def American?
Sentence (from "South of Heaven"): Released on July 5, 1988, the album was the band's second collaboration with record producer Rick Rubin, whose production skills on Slayer's previous album "Reign in Blood" had helped the band's sound evolve.
Relevant evidence: Yes