[['Serie A', 'CHAMPIONS', 'Juventus F.C.'], ['A.S. Roma', 'NUMBER_OF_MEMBERS', '70634'], ['A.S. Roma', 'GROUND', 'Stadio Olimpico'], ['A.S. Roma', 'LEAGUE', 'Serie A']]
AS Roma 's ground is Stadio Olimpico and they have 70634 members. They play in the _____ league of which Juventus FC have previously been champions.