CREATE TABLE table_67813 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Points" FLOAT)

Name the entrant for year more than 1991 and chassis of lotus 109
SELECT "Entrant" FROM table_67813 WHERE "Year" > '1991' AND "Chassis" = 'lotus 109'
SELECT "Entrant" FROM "table_67813" WHERE "Chassis" = 'lotus 109' AND "Year" > '1991'