Extract the answer to the following question from the movie plot. If the question isn't answerable, please output "Can't answer". Question: who is Vito's youngest son? Title: The Godfather Movie plot: In late summer 1945, guests are gathered for the wedding reception of Don Vito Corleone's daughter Connie (Talia Shire) and Carlo Rizzi (Gianni Russo). Vito (Marlon Brando), the head of the Corleone Mafia family, is known to friends and associates as "Godfather." He and Tom Hagen (Robert Duvall), the Corleone family lawyer, are hearing requests for favors because, according to Italian tradition, "no Sicilian can refuse a request on his daughter's wedding day." One of the men who asks the Don for a favor is Amerigo Bonasera, a successful mortician and acquaintance of the Don, whose daughter was brutally beaten by two young men because she refused their advances; the men received minimal punishment. The Don is disappointed in Bonasera, who'd avoided most contact with the Don due to Corleone's nefarious business dealings. The Don's wife is godmother to Bonasera's shamed daughter, a relationship the Don uses to extract new loyalty from the undertaker. The Don agrees to have his men punish the young men responsible in return for future service if necessary.Meanwhile, the Don's youngest son Michael (Al Pacino), a decorated Marine hero returning from World War II service, arrives at the wedding and tells his girlfriend Kay Adams (Diane Keaton) anecdotes about his family, informing her about his father's criminal life; he reassures her that he is different from his family and doesn't plan to join them in their criminal dealings. The wedding scene serves as critical exposition for the remainder of the film, as Michael introduces the main characters to Kay. Fredo (John Cazale), Michael's next older brother, is a bit dim-witted and quite drunk by the time he finds Michael at the party. Sonny (James Caan), the Don's eldest child and next in line to become Don upon his father's retirement, is married but he is a hot-tempered philanderer who sneaks into a bedroom to have sex with one of Connie's bridesmaids, Lucy Mancini (Jeannie Linero). Tom Hagen is not related to the family by blood but is considered one of the Don's...
The answer to this question is:
Michael