CREATE TABLE table_71423 ("Year" FLOAT, "Entrant" CLOB, "Chassis" CLOB, "Engine" CLOB, "Points" FLOAT)

In 1961, what was the Chassis when the points were lower than 6?
SELECT "Chassis" FROM table_71423 WHERE "Points" < '6' AND "Year" = '1961'
SELECT "Chassis" FROM "table_71423" WHERE "Points" < '6' AND "Year" = '1961'