Question: What is the name of this song recorded by Barbadian singer Rihanna for her album "Unapologetic", in which she worked with Anthony Mandler on the music video?
Sentence (from "Anthony Mandler"): The two have worked on sixteen music videos together throughout her career, beginning with "Unfaithful" in 2006 and most recently "Diamonds" in 2012.
Relevant evidence: Yes