Question: Mangal, born in Laghman is a prominent Afghan singer who started in the early 1970s, he and his ex-wife, which prominent Afghan singer who started her career in the early 1980s, were a popular musical duo who dominated Afghan music scene during the 1970s and early 1990s? 
Sentence (from "Mangal (singer)"): He and his ex-wife, Naghma, were a popular musical duo who dominated Afghan music scene during the 1970s and early 1990s.
Relevant evidence: Yes