CREATE TABLE table_13215 ("Club" CLOB, "City" CLOB, "Stadium" CLOB, "Capacity" FLOAT, "2007\\u201308 season" CLOB)

What is the 2007-08 season at Stadio Silvio Piola?
SELECT "2007\u201308 season" FROM table_13215 WHERE "Stadium" = 'stadio silvio piola'
SELECT "2007\u201308 season" FROM "table_13215" WHERE "Stadium" = 'stadio silvio piola'