Question: What is Rob Houwer and Paul Verhoeven's nationality?

Context paragraphs:
All Things Pass: All Things Pass (Dutch: Voorbij, voorbij ; literally "Gone, gone") is a 1979 television film directed by Paul Verhoeven.  In Douglas Keesey's book on Verhoeven, he writes that the film is a coda to Verhoeven's previous film "Soldier of Orange" (1977).  It concerns several Dutch resistance fighters 35 years after World War II who have sworn revenge on a Dutch SS officer who shot their friend during the Netherlands' resistance to Nazi occupation.  Upon finding the man, they discover that he is now paralysed and would suffer more to stay alive than be killed.

Soldier of Orange: Soldier of Orange (Dutch: "Soldaat van Oranje" , ] ) is a 1977 Dutch film directed and co-written by Paul Verhoeven and produced by Rob Houwer, starring Rutger Hauer and Jeroen Krabbé.  The film is set around the German occupation of the Netherlands during World War II, and shows how individual students have different roles in the war.  The story is based on the autobiographic book "Soldaat van Oranje" by Erik Hazelhoff Roelfzema.

Rob Houwer: Robert Piet Houwer (born 13 December 1937) is a Dutch film producer.  Houwer frequently collaborated with Paul Verhoeven and produced most of his Dutch movies.  However, they shared a very antagonistic relationship that came to a definitive end in 1983.  Houwer never quite enjoyed the artistic and commercial successes he had during the Verhoeven years.  In fact, three movies he produced are considered among the worst in Dutch cinema: De gulle Minnaar (1990), De Zeemeerman (1996) and Het woeden der gehele wereld (2006).

Paul Verhoeven: Paul Verhoeven (] ; born 18 July 1938) is a Dutch film director, film producer, television director, television producer, and screenwriter.  Verhoeven is active in both the Netherlands and Hollywood.  Explicit violent and/or sexual content and social satire are trademarks of both his drama and science fiction films.  He is best known for directing the films "RoboCop" (1987), "Total Recall" (1990), "Basic Instinct" (1992), "Showgirls" (1995), "Starship Troopers" (1997), and "Elle" (2016).

Het Woeden der Gehele Wereld (film): Het Woeden der Gehele Wereld is a 2006 Dutch film, based on the novel of the same name by Maarten 't Hart.  It was directed by Guido Pieters and produced by Rob Houwer.  The title translates as "The fury/rage/raging of the whole world" and is derived from a song with lyrics by René-François Sully-Prudhomme, set to music by Gabriel Fauré.

The Fourth Man (1983 film): The Fourth Man (Dutch: "De vierde man" ) is a 1983 Dutch suspense film directed by Paul Verhoeven, based on the novel "De vierde man" by Gerard Reve.  The film stars Jeroen Krabbé and Renée Soutendijk in the lead roles.  It was Verhoeven's last film made in the Netherlands before he established himself in Hollywood; he would later return to make 2006's "Black Book".  The film was selected as the Dutch entry for the Best Foreign Language Film at the 56th Academy Awards, but was not accepted as a nominee.

Planet Nerd: Planet Nerd is a television comedy variety programme broadcast on Channel 31 Melbourne produced by RMITV.  It stars local Melbourne comedians Dan Walmsley, Paul Verhoeven, Ben McKenzie, Simon Barber, Jason English-Rees, Andrew Doodson, Lou Pardi, and Rob Lloyd, and features other local Melbourne talent as well.  Segments from the program are uploaded to YouTube, and there is also an official video podcast.

Flesh and Blood (1985 film): Flesh and Blood (stylized as Flesh+Blood) is a 1985 American-Dutch-Spanish dramatic adventure film directed by Paul Verhoeven and starring Rutger Hauer, Jennifer Jason Leigh, Tom Burlinson and Jack Thompson.  The script was written by Verhoeven and Gerard Soeteman.  The story is set in the year 1501 in Italy, during the passing of the Late Middle Ages to the Early modern period, and follows two warring groups of mercenaries and their longstanding quarrel.

Black Book (film): Black Book (Dutch: Zwartboek ) is a 2006 Dutch thriller film co-written and directed by Paul Verhoeven and starring Carice van Houten, Sebastian Koch, Thom Hoffman, and Halina Reijn.  The film, credited as based on several true events and characters, is about a young Jewish woman in the Netherlands who becomes a spy for the resistance during World War II after tragedy befalls her in an encounter with the Nazis.  The film had its world premiere on 1 September 2006 at the Venice Film Festival and its public release on 14 September 2006 in the Netherlands.  It is the first film that Verhoeven made in the Netherlands since "The Fourth Man," made in 1983 before he moved to the United States.

Rob Bottin: Robin R. Bottin (born April 1, 1959) is an American special make-up effects creator.  Known for his collaborations with directors John Carpenter, Paul Verhoeven and David Fincher, Bottin worked with Carpenter on both "The Fog" and "The Thing", with Verhoeven on "RoboCop", "Total Recall" and "Basic Instinct", and with Fincher on "Se7en" and "Fight Club".  His other film credits include "Legend", "Innerspace" and "Fear and Loathing in Las Vegas".

Supporting paragraphs: Rob Houwer Paul Verhoeven
Answer: Dutch