Question: How many races did Hamilton participate in after 2010?
SQL: SELECT count ( * )  FROM drivers AS T1 JOIN results AS T2 ON T1.driverid  =  T2.driverid JOIN races AS T3 ON T2.raceid  =  T3.raceid WHERE T3.year > 2010 and T1.surname = 'Hamilton' GROUP BY T1.driverid