ในปี 1972 ผู้เข้าแข่งขันแชสซี March 721G มีกี่คะแนน?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
In 1972, how many points did the entrant with the March 721G Chassis have?It is not neccessary to use all the tables.
 table_name_74:  points [ VARCHAR]  year [ VARCHAR]  chassis [ VARCHAR] 
SELECT points FROM table_name_74 WHERE year > 1972 AND chassis = "march 721g"