CREATE TABLE table_69723 ("Year" FLOAT, "Entrant" CLOB, "Chassis" CLOB, "Engine" CLOB, "Points" FLOAT)

What model engine has a lotus 16 chassis?
SELECT "Engine" FROM table_69723 WHERE "Chassis" = 'lotus 16'
SELECT "Engine" FROM "table_69723" WHERE "Chassis" = 'lotus 16'