CREATE TABLE table_name_48 (laps VARCHAR2, manufacturer VARCHAR2, rider VARCHAR2)

Which Laps have a Manufacturer of aprilia, and a Rider of sergio gadea?
SELECT laps FROM table_name_48 WHERE manufacturer = "aprilia" AND rider = "sergio gadea"
SELECT "laps" FROM "table_name_48" WHERE "aprilia" = "manufacturer" AND "rider" = "sergio gadea"