CREATE TABLE table_name_8 (touchdowns INTEGER, field_goals VARCHAR(255), extra_points VARCHAR(255), player VARCHAR(255))
Which Touchdowns have an Extra points smaller than 5, and a Player of clark, and Field goals larger than 0?
    
SQL: SELECT AVG(touchdowns) FROM table_name_8 WHERE extra_points < 5 AND player = "clark" AND field_goals > 0