CREATE TABLE table_name_21 (assists VARCHAR, minutes VARCHAR, player VARCHAR, position VARCHAR, goals VARCHAR)
What is the total number of assists when Edmundo Rodriguez is playing the position of striker, less than 4 goals were scored, and the minutes were less than 473?
SELECT COUNT(assists) FROM table_name_21 WHERE position = "striker" AND goals < 4 AND player = "edmundo rodriguez" AND minutes < 473