title: 2012 Vuelta a España
context: The race was won for the second time by Alberto Contador of Saxo Bank–Tinkoff Bank, taking his first overall victory since returning from a doping suspension.[3] Contador, who won the seventeenth stage of the race after a solo attack, won the general classification by 1' 16" over runner-up Alejandro Valverde of the Movistar Team team. Two-time stage winner Valverde also won two sub-classifications on the final day; by taking a sixth-place finish on the stage into Madrid, he overhauled the points tally of Joaquim Rodríguez (Team Katusha) in that classification, and their resultant switch of positions, allowed Valverde to take the combination classification – where the lowest cumulative score across the general, points and mountains classifications wins – as well.[4]
question: Who won Vuelta a Espana in 2012?
answers: Alberto Contador