Table: coppa_acerbo_results
Columns: year
driver_s
class
vehicle
race_title

Question: What class of car had the XI Coppa Acerbo title?
SQL: SELECT "class" FROM coppa_acerbo_results WHERE "race_title" = 'xi coppa acerbo'

Question: Who won the III Coppa Acerbo title?
SQL: SELECT "driver_s" FROM coppa_acerbo_results WHERE "race_title" = 'iii coppa acerbo'

Question: What's the name of the title for the Maserati A6GCS?
SQL: SELECT "race_title" FROM coppa_acerbo_results WHERE "vehicle" = 'maserati a6gcs'

Question: Who won the XXIV Gran Premio di Pescara in the sports car class?
SQL: SELECT "driver_s" FROM coppa_acerbo_results WHERE "class" = 'sports car' AND "race_title" = 'xxiv gran premio di pescara'