Question: What Arabian stallion born in 1971 starred in the 1983 film adaptation of a book of the same name by Walter Farley?

Context paragraphs:
The Black Stallion: The Black Stallion, known as the Black or Shêtân, is the title character from author Walter Farley's bestselling series about the stallion and his young owner, Alec Ramsay.  The series chronicles the story of an Arab sheikh's prized stallion after he comes into Alec's possession, although later books furnish the Black's backstory.

El Mokhtar: El Mokhtar (February 9, 1971 – December 31, 1983) was an Arabian horse, and one of three black Arabian stallions used to portray "The Black" in the second "Black Stallion" film, "The Black Stallion Returns."

The Young Black Stallion: The Young Black Stallion is a 2003 made-for-IMAX family film from Walt Disney Pictures.  Directed by Simon Wincer, the film is based on the 1989 novel of the same name by "Black Stallion" creator Walter Farley and his son Steven Farley.  Noted for its beautiful scenery and wide-angle shots, the 50-minute film was shot on-location in the deserts of Namibia and South Africa.  The film stars as Neera, a young girl who befriends a young black stallion, and Patrick Elyas as Aden, although his voice was dubbed by Eric Grucza, who, for his uncredited performance was nominated in 2004 for the Young Artist Award for Best Performance in a Voice-Over Role.

Skowronek (horse): Skowronek (a name meaning "lark" or "skylark" in Polish) was an Arabian stallion foaled in 1909.  He was bred by Count Józef Potocki who owned the Antoniny Stud in Poland.  He was imported to England as a young horse.  Upon purchase by Lady Wentworth, Skowronek became a foundation stallion at Lady Wentworth's famed Crabbet Arabian Stud.  He was most often crossed on mares who were daughters or granddaughters of the stallion Mesaoud, another foundation stallion for Crabbet, who had been bred by Ali Pasha Sherif and imported from Egypt to England by Lady Wentworth's parents, Wilfrid and Lady Anne Blunt.

The Adventures of the Black Stallion: The Adventures of The Black Stallion is a television series that starred Mickey Rooney and Richard Ian Cox, as a trainer and a teenaged horse racer and was loosely based on the book series by Walter Farley.  The series originally ran on The Family Channel and YTV from September 15, 1990 to May 16, 1993, before cancellation.  It has since been shown in re-runs throughout the world.  Mickey Rooney is the only original cast member from "The Black Stallion" to reprise his role in the show.

The Black Stallion (film): The Black Stallion is a 1979 American film based on the 1941 classic children's novel "The Black Stallion" by Walter Farley.  It tells the story of Alec Ramsey, who is shipwrecked on a deserted island with a wild Arabian stallion whom he befriends.  After being rescued, they are set on entering a race challenging two champion horses.

Kelly Reno: Kelly Reno (born June 19, 1966, in Pueblo, Colorado) is a former child actor who was cast at age 11 in the role of Alec Ramsey, the young boy who is marooned on a deserted island along with a horse, in "The Black Stallion" (based on the novel by Walter Farley).  The film was made in 1977.

The Black Stallion Returns: The Black Stallion Returns is a 1983 film adaptation of the book of the same name by Walter Farley, and is a sequel to "The Black Stallion".  It is directed by Robert Dalva and produced by Francis Ford Coppola for MGM/UA Entertainment Company.  The movie stars Kelly Reno, Vincent Spano and Teri Garr.  The portrayal of The Black was shared between Cass Ole, the horse from "The Black Stallion", and El Mokhtar.

Walter Farley: Walter Farley (born Walter Lorimer Farley, 26 June 1915 – 16 October 1989) was an American author, primarily of horse stories for children.  His first and most famous work was "The Black Stallion" (1941).  He wrote many sequels, and the series has been continued since his death by his son Steven.

Witez II: Witez II (April 1, 1938 – June 9, 1965) was a bay Arabian stallion foaled at the Janów Podlaski stud in Poland.  He spent his early years at Janów at a time when Poland was under occupation by Nazi Germany before ultimately arriving in the United States in 1945, where he lived for the remainder of his life until his death.  His name came from an archaic Polish word meaning "chieftain, knight, prince and hero."

Supporting paragraphs: El Mokhtar The Black Stallion Returns
Answer: El Mokhtar