CREATE TABLE table_5012 ("Player" TEXT, "Touchdowns" FLOAT, "Extra points" FLOAT, "Field goals" FLOAT, "Points" FLOAT)

When Herb Graver played, how many field goals were made when there were more than 50 points, less than 15 touchdowns, and more than 0 extra points?
SELECT AVG("Field goals") FROM table_5012 WHERE "Points" > '50' AND "Extra points" > '0' AND "Player" = 'herb graver' AND "Touchdowns" < '15'
SELECT AVG("Field goals") FROM "table_5012" WHERE "Extra points" > '0' AND "Player" = 'herb graver' AND "Points" > '50' AND "Touchdowns" < '15'