CREATE TABLE table_name_29 (points INT, year VARCHAR, chassis VARCHAR)

What is the sum of points in 1991, for footwork a11c chassis?
SELECT SUM(points) FROM table_name_29 WHERE year = 1991 AND chassis = "footwork a11c"
SELECT SUM("points") FROM "table_name_29" WHERE "chassis" = "footwork a11c" AND "year" = 1991