Question: Dennis Gansel and Nick Park, have which occupations in common?

Context paragraphs:
Mädchen, Mädchen: Mädchen, Mädchen (English: "Girls, Girls"), also known as Girls on Top, is a 2001 German film directed by Dennis Gansel.  Its story is about an eighteen-year-old girl named Inken (Diana Amft), who is frustrated at not having had an orgasm yet with her boyfriend.  Her two best friends are Vicky (Felicitas Woll), who is in the same situation as Inken, and the still virgin Lena (Karoline Herfurth).  The movie is about the girls' search to find someone to give them an orgasm.  The film was followed by a 2004 sequel, "Mädchen, Mädchen 2 - Loft oder Liebe".  The film had over 1,700,000 admissions in Germany and grossed $233,538 in Russia.

Frederick Lau: Frederick Lau (born August 17, 1989 in Steglitz, Berlin, Germany) is a German actor.  He grew up and still lives in Berlin-Steglitz.  He was awarded the Deutscher Filmpreis (German Film Awards, colloquially known as the Lolas) for portraying the student Tim in the film "Die Welle" based on the novel by Dennis Gansel.  Since 2000 he has played over 50 roles in film and television.

The Fourth State: The Fourth State (German: "Die vierte Macht" ) is a 2012 German thriller film directed by Dennis Gansel and starring Moritz Bleibtreu, Kasia Smutniak, Max Riemelt, Rade Serbedzija, Mark Ivanir and Isabella Vinet.  It premiered in Germany on March 8, 2012.  The working title was "The Year of the Snake".

We Are the Night (film): We Are the Night (German: Wir sind die Nacht ) is a 2010 German vampire horror film directed by Dennis Gansel, starring Karoline Herfurth and Nina Hoss.  The film deals with a young woman who gets bitten by a female vampire and drawn into her world.  She falls in love with a young police officer who investigates a murder case involving the vampires.  The film explores themes of depression, self-harm, the consequences of immortality, suicide, and explores Valerie Solanas' idea of an all-female society.

Nick Park: Nicholas Wulstan "Nick" Park, CBE (born 6 December 1958) is an English director, writer and animator best known as the creator of "Wallace and Gromit" and "Shaun the Sheep".  Park has been nominated for an Academy Award a total of six times, and won four with "Creature Comforts" (1989), "The Wrong Trousers" (1993), "A Close Shave" (1995), and "" (2005).

Das Phantom: Das Phantom ("The Phantom") is a 2000 German thriller TV movie directed by Dennis Gansel.  It is based on the book "Das RAF-Phantom" and stars Jürgen Vogel.

Anna Fischer: Marion Anna Fischer (born July 18, 1986 in East Berlin) is a German actress and singer.  Since 2003, she appeared in over 30 film and television roles in appearance.  She is most recognised to international audiences as the innocent vampire "Nora" in Dennis Gansel's drama film "We Are The Night"

Dennis Gansel: Dennis Gansel (born 4 October 1973) is a film director, writer and actor from Germany.

Before the Fall (2004 film): Before the Fall (also known as NaPolA: Hitler's Elite; German: "Napola - Elite für den Führer") is a 2004 German drama film written and directed by Dennis Gansel.  It is centered around the National Political Institutes of Education or "NaPolA" schools created under the government of Nazi Germany.  These military academies were designed as preparatory schools for the future Nazi political and military elite.

Arved Birnbaum: Arved Birnbaum is a German actor most known to audiences worldwide as Max Riemelt's down to earth senior in Dennis Gansel's vampire thriller/drama "We Are The Night".  He has played over 60 roles in film and television since 1999.

Supporting paragraphs: Dennis Gansel Nick Park
Answer: director, writer