CREATE TABLE table_name_27 (engine VARCHAR, year VARCHAR, points VARCHAR, chassis VARCHAR)

what is the engine that saw 0 points, and a Chassis of porsche 718, in 1961?
SELECT engine FROM table_name_27 WHERE points = 0 AND chassis = "porsche 718" AND year = 1961
SELECT "engine" FROM "table_name_27" WHERE "chassis" = "porsche 718" AND "points" = 0 AND "year" = 1961