Question: Which American singer was part of the Citizen Change political service group and spent a record sixteen weeks atop the "Billboard" Hot 100.
Sentence (from "Mariah Carey"): Carey and Boyz II Men spent a record sixteen weeks atop the "Billboard" Hot 100 in 1995–1996 with "One Sweet Day," which remains the longest-running number-one song in US chart history.
Relevant evidence: Yes