Arrabbiata sauce can be found in Italy, where Rome is the capital and Italian is the language spoken. Pietro Grasso and Sergio Mattarella are leaders in Italy.
[['Arrabbiata sauce', 'COUNTRY', 'Italy'], ['Italy', 'LEADER_NAME', 'Pietro Grasso'], ['Italy', 'CAPITAL', 'Rome'], ['Italy', 'LANGUAGE', 'Italian language'], ['Italy', 'LEADER_NAME', 'Sergio Mattarella']]