Question: 2012–13 Real Madrid C.F. season began with a win at the matchup that took place on which two dates?
Sentence (from "2012 Supercopa de España"): The 2012 Supercopa de España was a two-legged Spanish football match-up that took place on 23 and 29 August 2012 between the champions of 2011–12 La Liga, Real Madrid, and the winner of the 2011–12 Copa del Rey, Barcelona.
Relevant evidence: Yes