Question: What actor plays Michael Corleone's brother in "The Godfather Part II"?

Context paragraphs:
Fredo Corleone: Fredo (Frederico) Corleone is a fictional character in Mario Puzo's novel "The Godfather".  Fredo is portrayed by American actor John Cazale in the Francis Ford Coppola film adaptation and in the sequel, "The Godfather Part II".

The Godfather Part III: The Godfather Part III is a 1990 American crime film written by Mario Puzo and Francis Ford Coppola, and directed by Coppola.  A sequel to "The Godfather" (1972) and "The Godfather Part II" (1974), it completes the story of Michael Corleone, a Mafia kingpin who attempts to legitimize his criminal empire.  The film also includes fictionalized accounts of two real-life events: the 1978 death of Pope John Paul I and the Papal banking scandal of 1981–82, both linked to Michael Corleone's business affairs.  The film stars Al Pacino, Diane Keaton, Talia Shire, and Andy García, and features Eli Wallach, Joe Mantegna, George Hamilton, Bridget Fonda, and Sofia Coppola.

Vito Corleone: Vito Corleone is a fictional character in Mario Puzo's novel "The Godfather" and in the first two of Francis Ford Coppola's three Godfather films, in which he was portrayed by Marlon Brando in "The Godfather" and then, as a young man, by Robert De Niro in "The Godfather Part II".  He is an orphaned Sicilian immigrant who builds a mafia empire.  Upon his death, Michael, his youngest son, succeeds him as the mafia don of the Corleone crime family.

The Godfather Saga: The Godfather Saga is a TV miniseries that combines "The Godfather" and "The Godfather Part II" into one film.  It originally aired on NBC over four consecutive nights (one three-hour segment and three two-hour segments) in November 1977.  "The Godfather Saga" is also known as The Godfather: The Complete Novel for Television, The Godfather: A Novel for Television, The Godfather Novella, and The Godfather Epic (on HBO).  The television version was the basis for a shorter, 1981 video release known as The Godfather 1902–1959: The Complete Epic.  Following the release of "The Godfather Part III" in 1990, a third unified version was released to video in 1992 entitled The Godfather Trilogy: 1901–1980.

The Godfather's Revenge: The Godfather's Revenge, a 2006 novel written by author Mark Winegardner, is the sequel to "The Godfather", "The Sicilian", and "The Godfather Returns".  The story takes place from 1963–1964, and picks up the story from where "The Godfather Returns" left off.  The novel deals with Michael Corleone's guilt over the events of "The Godfather Part II", particularly his ordering the death of his brother, Fredo.  Subplots include Nick Geraci's plans for revenge against the Corleones, Tom Hagen's being implicated in a murder, and organized crime's battle with a presidential family (the Sheas, who are analogous to the Kennedy family).

John Cazale: John Holland Cazale ( ; ] ; August 12, 1935 – March 13, 1978) was an American actor.  He appeared in five films over a period of six years, all of which were nominated for the Academy Award for Best Picture: "The Godfather", "The Conversation", "The Godfather Part II", "Dog Day Afternoon", and "The Deer Hunter."  He appeared in archival footage in "The Godfather Part III", also nominated for Best Picture, making him the only actor to have this multi-film distinction.  From his start as a theater actor, he became one of Hollywood's premier character actors, starting with his role as the doomed, weak-minded Fredo Corleone opposite longtime friend Al Pacino in Francis Ford Coppola's film "The Godfather" and its 1974 sequel.  Cazale chose to continue acting despite being diagnosed with lung cancer.  He died in New York City on March 13, 1978, shortly after completing his role in "The Deer Hunter".

The Godfather (film series): The Godfather is an American film series that consists of three crime drama films directed by Francis Ford Coppola inspired by the novel of the same name by Italian American author Mario Puzo.  The series follows the trials of the Corleone family, Italian Americans whose patriarch, Vito Corleone, rises to be a major figure in American organized crime.  His youngest son, Michael Corleone, becomes his successor.  All three films were distributed by Paramount Pictures and released in 1972, 1974 and 1990.  The series achieved success at the box office, with the films earning over $550 million worldwide.  The first two films have received wide acclaim since release; the former, "The Godfather", is seen by many as one of the greatest films of all time.  Its sequel, "The Godfather Part II", is viewed by many as the best sequel in cinematic history.  The series is heavily awarded, winning 9 out of 29 total Academy Award nominations.

Carmine Rosato: Carmine Rosato is a fictional character in the film "The Godfather Part II", as well as its video game adaptation.  He is known as one of the Rosato Brothers, along with his brother Tony.  Carmine works in Pete Clemenza's "regime" after Michael Corleone moves to Lake Tahoe, Nevada.  He is also known to have ties with Hyman Roth in Miami, Florida.  In the film, he is portrayed by Carmine Caridi.

The Godfather Part II: The Godfather Part II is a 1974 American crime film produced and directed by Francis Ford Coppola from a screenplay co-written with Mario Puzo, starring Al Pacino and Robert De Niro.  Partially based on Puzo's 1969 novel "The Godfather", the film is both sequel and prequel to "The Godfather", presenting parallel dramas: one picks up the 1958 story of Michael Corleone (Pacino), the new Don of the Corleone crime family, protecting the family business in the aftermath of an attempt on his life; the prequel covers the journey of his father, Vito Corleone (De Niro), from his Sicilian childhood to the founding of his family enterprise in New York City.

Hyman Roth: Hyman Roth (born Hyman Suchowsky; 1891 – 1960) is a fictional character and antagonist in "The Godfather Part II" and a minor character in the novel "The Godfather Returns".  He is a Jewish investor and a business partner of Vito Corleone, and later his son Michael Corleone.  He is based on Florida mobster Meyer Lansky and was played by Lee Strasberg in the movie.

Supporting paragraphs: The Godfather's Revenge Fredo Corleone
Answer: John Cazale