CREATE TABLE table_11743 ("Entrant" CLOB, "Constructor" CLOB, "Chassis" CLOB, "Engine \\u2020" CLOB, "Tyre" CLOB, "Driver" CLOB, "Rounds" CLOB)

What's the rounds for jenson button with a bmw e41 engine?
SELECT "Rounds" FROM table_11743 WHERE "Engine \u2020" = 'bmw e41' AND "Driver" = 'jenson button'
SELECT "Rounds" FROM "table_11743" WHERE "Driver" = 'jenson button' AND "Engine \u2020" = 'bmw e41'