CREATE TABLE table_58728 ("Club" TEXT, "City" TEXT, "Stadium" TEXT, "Capacity" FLOAT, "2007\\u201308 season" TEXT)

What is the capacity when the 2007 08 season was 1st Serie D/I?
SELECT "Capacity" FROM table_58728 WHERE "2007\u201308 season" = '1st serie d/i'
SELECT "Capacity" FROM "table_58728" WHERE "2007\u201308 season" = '1st serie d/i'