CREATE TABLE table_70281 ("Year" FLOAT, "Entrant" CLOB, "Chassis" CLOB, "Engine" CLOB, "Points" FLOAT)

Name the sum of year for connaught engineering and points less than 0
SELECT SUM("Year") FROM table_70281 WHERE "Entrant" = 'connaught engineering' AND "Points" < '0'
SELECT SUM("Year") FROM "table_70281" WHERE "Entrant" = 'connaught engineering' AND "Points" < '0'