According to Harlan Lebo in "The Godfather Legacy" (a must-read for all on these boards), DeNiro went to Sicily and boned up intensively for his role in GFII.
Ntra la porta tua lu sangu � sparsu,
E nun me mporta si ce muoru accisu...
E s'iddu muoru e vaju mparadisu
Si nun ce truovo a ttia, mancu ce trasu.
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