Question: Who is an American professional basketball player for the San Antonio Spurs, who was traded by the raptors on December 9, 2013 to the Sacramento Kings ?
Sentence (from "2013–14 Toronto Raptors season"): On December 9, 2013 the Raptors traded Rudy Gay, Quincy Acy, and Aaron Gray to the Sacramento Kings for John Salmons, Greivis Vásquez, Patrick Patterson, and Chuck Hayes.
Relevant evidence: Yes