CREATE TABLE table_59515 ("Opposing Teams" TEXT, "Against" FLOAT, "Date" TEXT, "Venue" TEXT, "Status" TEXT)

What is the average against of Murrayfield, Edinburgh?
SELECT AVG("Against") FROM table_59515 WHERE "Venue" = 'murrayfield, edinburgh'
SELECT AVG("Against") FROM "table_59515" WHERE "Venue" = 'murrayfield, edinburgh'