CREATE TABLE table_71491 ("Name" TEXT, "Years" TEXT, "Gender" TEXT, "Area" TEXT, "Authority" TEXT, "Decile" TEXT)

What authority is the coed school in pinehaven?
SELECT "Authority" FROM table_71491 WHERE "Gender" = 'coed' AND "Area" = 'pinehaven'
SELECT "Authority" FROM "table_71491" WHERE "Area" = 'pinehaven' AND "Gender" = 'coed'