Table schema:
CREATE TABLE table_name_80 (goals_conceded__gc_ INTEGER, draw__pe_ VARCHAR, goals_scored__gf_ VARCHAR, points__pts_ VARCHAR)

Question: What is the average number of goals conceded where more than 19 goals were scored, the team had 31 points, and more than 7 draws?
SQL: SELECT AVG(goals_conceded__gc_) FROM table_name_80 WHERE goals_scored__gf_ > 19 AND points__pts_ = 31 AND draw__pe_ > 7