CREATE TABLE table_26137666_3 (pole_position VARCHAR2, circuit VARCHAR2, winning_driver VARCHAR2)

What is every pole position for the Castle Combe circuit and Robbie Kerr is the winning driver?
SELECT pole_position FROM table_26137666_3 WHERE circuit = "Castle Combe" AND winning_driver = "Robbie Kerr"
SELECT "pole_position" FROM "table_26137666_3" WHERE "Castle Combe" = "circuit" AND "Robbie Kerr" = "winning_driver"