CREATE TABLE table_71617 ("Year" FLOAT, "Entrant" CLOB, "Chassis" CLOB, "Engine" CLOB, "Points" FLOAT)

What is the year with a Kurtis Kraft 500a chassis, and less than 1.5 points?
SELECT SUM("Year") FROM table_71617 WHERE "Chassis" = 'kurtis kraft 500a' AND "Points" < '1.5'
SELECT SUM("Year") FROM "table_71617" WHERE "Chassis" = 'kurtis kraft 500a' AND "Points" < '1.5'