CREATE TABLE table_69830 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Points" FLOAT)

In 1972, how many points did the entrant with the March 721G Chassis have?
SELECT "Points" FROM table_69830 WHERE "Year" > '1972' AND "Chassis" = 'march 721g'
SELECT "Points" FROM "table_69830" WHERE "Chassis" = 'march 721g' AND "Year" > '1972'