Question: Who is known for their prolific work in the horror film genre, Valie Export or Gary Sherman?

Context paragraphs:
Woman's film: The woman's film is a film genre which includes women-centered narratives, female protagonists and is designed to appeal to a female audience.  Woman's films usually portray "women's concerns" such as problems revolving around domestic life, the family, motherhood, self-sacrifice, and romance.  These films were produced from the silent era through the 1950s and early 1960s, but were most popular in the 1930s and 1940s, reaching their zenith during World War II.  Although Hollywood continued to make films characterized by some of the elements of the traditional woman's film in the second half of the 20th century, the term itself disappeared in the 1960s.  The work of directors George Cukor, Douglas Sirk, Max Ophüls, and Josef von Sternberg has been associated with the woman's film genre.  Joan Crawford, Bette Davis, and Barbara Stanwyck were some of the genre's most prolific stars.

Renate Bertlmann: Renate Bertlmann (28 February 1943 in Vienna) is an Austrian feminist avant-garde artist, living and working in Vienna.  She is a contemporary of Birgit Jürgenssen and VALIE EXPORT, and her work focuses on the relationship between masculine and feminine forms.

Death Line: Death Line is a 1972 British horror film, distributed as Raw Meat in the United States.  The film stars Donald Pleasence as Inspector Calhoun, and was written and directed by the American filmmaker Gary Sherman.

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".

Wes Craven: Wesley Earl "Wes" Craven (August 2, 1939 – August 30, 2015) was an American film director, writer, producer, and actor.  He was known for his pioneering work in the genre of horror films, particularly slasher films, where his impact on the genre was considered prolific and influential.  Due to the success and cultural impact of his works in the horror film genre, Craven has been called the "Master of Horror".

Valie Export: Valie Export (often written as 'VALIE EXPORT') (born May 17, 1940 in Linz as Waltraud Lehner, later Waltraud Höllinger) is an Austrian artist.  Her artistic work includes video installations, body performances, expanded cinema, computer animations, photography, sculptures and publications covering contemporary arts.

The Practice of Love: The Practice of Love (German: "Die Praxis der Liebe" ) is a 1985 Austrian drama film written by and directed by Valie Export.  It was entered into the 35th Berlin International Film Festival.

Poltergeist III: Poltergeist III is a 1988 American supernatural horror film and is the third and final entry in the original "Poltergeist" film series.  Writers Michael Grais and Mark Victor, who wrote the screenplays for the first two films, did not return for this second sequel; it was co-written, executive produced, and directed by Gary Sherman, and was released on June 10, 1988 by Metro-Goldwyn-Mayer Pictures.  The film was panned by critics, and was a box office disappointment.

Dead &amp; Buried: Dead & Buried is a 1981 science fiction horror film directed by Gary Sherman, starring Melody Anderson, Jack Albertson, and James Farentino.  The film focuses on a small town wherein a few tourists are murdered, but their corpses begin to reanimate.  With a screenplay written by Dan O'Bannon and Ronald Shusett, the movie was initially banned as a "video nasty" in the UK in the early 1980s, but was later acquitted of obscenity charges and removed from the Director of Public Prosecutions' list.

Vice Squad (1982 film): Vice Squad is a 1982 action/crime drama film, starring Wings Hauser, Season Hubley, and Gary Swanson, directed by Gary Sherman.  The original music score was composed by Joe Renzetti and Keith Rubinstein.  Wings Hauser sang the vocal track on the film's opening and closing theme song "Neon Slime".

Supporting paragraphs: Valie Export Gary Sherman (director)
Answer: Gary Sherman