CREATE TABLE table_58738 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Pts." TEXT)

What is the year of the Lotus 25 chassis?
SELECT AVG("Year") FROM table_58738 WHERE "Chassis" = 'lotus 25'
SELECT AVG("Year") FROM "table_58738" WHERE "Chassis" = 'lotus 25'