CREATE TABLE table_51291 ("Entrant" CLOB, "Constructor" CLOB, "Chassis" CLOB, "Engine \\u2020" CLOB, "Tyre" CLOB, "Driver" CLOB, "Rounds" CLOB)

What is the constructor of driver Alexander Wurz?
SELECT "Constructor" FROM table_51291 WHERE "Driver" = 'alexander wurz'
SELECT "Constructor" FROM "table_51291" WHERE "Driver" = 'alexander wurz'