CREATE TABLE table_65239 ("Stadium" CLOB, "Capacity" FLOAT, "City" CLOB, "Province" CLOB, "Home team ( s ) " CLOB)

What was the average capacity for v lez s rsfield?
SELECT AVG("Capacity") FROM table_65239 WHERE "Home team(s)" = 'vélez sársfield'
SELECT AVG("Capacity") FROM "table_65239" WHERE "Home team(s)" = 'vélez sársfield'