CREATE TABLE table_36014 ("Rank" TEXT, "Stadium" TEXT, "Capacity" FLOAT, "City" TEXT, "Country" TEXT)

Which Capacity has a City of london, and a Stadium of queen's club?
SELECT AVG("Capacity") FROM table_36014 WHERE "City" = 'london' AND "Stadium" = 'queen''s club'
SELECT AVG("Capacity") FROM "table_36014" WHERE "City" = 'london' AND "Stadium" = 'queen\'s club'