Question: Who directed more movies, Vincent Sherman or David Seltzer?

full_context: Document 1: Lucas (film): is a 1986 American teen tragicomedy film directed by David Seltzer and starring Corey Haim, Kerri Green, Charlie Sheen and Courtney Thorne-Smith. The film was Winona Ryder's screen debut.
Document 2: Victor Fleming: Victor Lonzo Fleming (February 23, 1889 – January 6, 1949) was an American film director, cinematographer, and producer. His most popular films were "The Wizard of Oz" (1939), and "Gone with the Wind" (1939), for which he won an Academy Award for Best Director. Fleming has two films listed in the top 10 of the American Film Institute's 2007 AFI's 100 Years...100 Movies list.
Document 3: Vincent Sherman: Vincent Sherman (July 16, 1906 – June 18, 2006) was an American director and actor who worked in Hollywood. His movies include "Mr. Skeffington" (1944), "Nora Prentiss" (1947), and "The Young Philadelphians" (1959).
Document 4: George Sherman: George Sherman (July 14, 1908 – March 15, 1991) was an American film director and producer of low-budget Western films.
Document 5: Gary Sherman (director): Gary Sherman (born 1945), is an American film director, screenwriter, and producer from Chicago, Illinois. He is best known for his prolific work in the horror film genre, directing films such as "Death Line, Dead & Buried", and "Poltergeist III".
Document 6: Anthony Mann: Anthony Mann (June 30, 1906 – April 29, 1967) was an American actor and film director, most notably of films noir and Westerns. As a director, he often collaborated with the cinematographer John Alton and with actor James Stewart in his Westerns.
Document 7: The Omen: The Omen is a 1976 British-American supernatural horror film directed by Richard Donner, and written by David Seltzer. The film stars Gregory Peck, Lee Remick, David Warner, Harvey Spencer Stephens, Billie Whitelaw, Patrick Troughton, Martin Benson, and Leo McKern. The first installment of "The Omen" franchise, "The Omen" concerns a young child replaced at birth by American Ambassador Robert Thorn unbeknownst to his wife, after their own son is stillborn. They are surrounded by mysterious and ominous deaths, unaware that the child, Damien, is the Antichrist.
Document 8: Nora Prentiss: Nora Prentiss is a 1947 black-and-white drama film noir directed by Vincent Sherman, and starring Ann Sheridan, Kent Smith, Bruce Bennett and Robert Alda. Sherman also directed leading lady Sheridan in another 1947 film noir, "The Unfaithful". The cinematography is by cinematographer James Wong Howe, and the music was composed by Franz Waxman.
Document 9: Mervyn LeRoy: Mervyn LeRoy (October 15, 1900 – September 13, 1987) was an American film director, film producer and occasional actor.
Document 10: David Seltzer: David Seltzer (born 1940) is an American screenwriter, producer and director, perhaps best known for writing the screenplays for "The Omen" (1976) and "Bird on a Wire" (1990). As writer-director, Seltzer's credits include the 1986 teen tragi-comedy "Lucas" starring Corey Haim, Charlie Sheen and Winona Ryder, the 1988 comedy "Punchline" starring Sally Field and Tom Hanks, and 1992's "Shining Through" starring Melanie Griffith and Michael Douglas.
Document 11: Jason Friedberg and Aaron Seltzer: Jason Friedberg (born October 13, 1971) and Aaron Seltzer (born January 12, 1974) are an American-Canadian film director and screenwriter team known for making parody movies that have received extremely unfavorable reviews, but have done well at the box office. They were part of the writing team for "Scary Movie" and "Spy Hard", and have written/directed films such as "Date Movie", "Epic Movie", "Meet the Spartans", "Disaster Movie", "Vampires Suck", "The Starving Games", "Best Night Ever", and "Superfast!".
Document 12: David Zelag Goodman: David Zelag Goodman (January 15, 1930 – September 26, 2011) was a playwright and screenwriter for both TV and film. His most prolific period was from the 1960s to the early 1980s. He was nominated for an Academy Award for "Lovers and Other Strangers", though he did not win. He co-wrote, with Sam Peckinpah, the screenplay for 1971's controversial "Straw Dogs". He died less than two weeks after the remake was released. Other films that he wrote or co-wrote included "Logan's Run", "Monte Walsh", and "Farewell, My Lovely". He also wrote a number of the episodes of "The Untouchables" in the early 1960s.
Document 13: David O. Selznick: David O. Selznick (May 10, 1902June 22, 1965) was an American film producer, screenwriter and film studio executive. He is best known for producing "Gone with the Wind" (1939) and "Rebecca" (1940), both earning him an Academy Award for Best Picture.
Document 14: Richard Donner: Richard Donner (born Richard Donald Schwartzberg; April 24, 1930) is an American director and producer of film and television. After directing the horror film "The Omen" (1976), Donner became famous for directing the first modern superhero film, "Superman" (1978), starring Christopher Reeve.
Document 15: David Siegel (screenwriter): David Siegel is an American film director, screenwriter and producer, and part of a long-standing writing-directing-producing team with filmmaker Scott McGehee.
ground_truth: David Seltzer