CREATE TABLE table_name_93 (points INT, engine VARCHAR, chassis VARCHAR)

What is the average number of points for an Offenhauser L4 engine with a Trevis chassis?
SELECT AVG(points) FROM table_name_93 WHERE engine = "offenhauser l4" AND chassis = "trevis"
SELECT AVG("points") FROM "table_name_93" WHERE "chassis" = "trevis" AND "engine" = "offenhauser l4"