CREATE TABLE table_59641 ("Team" CLOB, "Driver" CLOB, "Class" CLOB, "Chassis" CLOB, "Engine" CLOB, "Rounds" CLOB)

How many rounds did shirley van der lof go?
SELECT "Rounds" FROM table_59641 WHERE "Driver" = 'shirley van der lof'
SELECT "Rounds" FROM "table_59641" WHERE "Driver" = 'shirley van der lof'