CREATE TABLE table_70395 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Points" FLOAT)

Before the year 1988, what is the lowest number of points that entrant Coloni SpA scored?
SELECT MIN("Points") FROM table_70395 WHERE "Entrant" = 'coloni spa' AND "Year" < '1988'
SELECT MIN("Points") FROM "table_70395" WHERE "Entrant" = 'coloni spa' AND "Year" < '1988'