Question: Mangal, born in Laghman is a prominent Afghan singer, who started in the early 1970s, he and his ex-wife Naghma, were a popular musical duo, Naghma is a prominent Afghan singer, who started her career in which time period?
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