Question: Which country do Rolf de Heer and Ralph Smart have in common?

Context articles: Incident at Raven's Gate
The Tracker
Ralph Smart
Ten Canoes
The Quiet Room
Dance Me to My Song
Alexandra's Project
Rolf de Heer
Andrew Plain
Charlie's Country

Incident at Raven's Gate (also released as Encounter at Raven's Gate) is a 1988 science fiction arthouse feature film directed by prominent Australian director Rolf de Heer.
The Tracker is an Australian drama film produced in 2002.
 It was directed and written by Rolf de Heer.
 It is set in 1922 in outback Australia where a racist white colonial policeman (Gary Sweet) used the tracking ability of an Indigenous Australian tracker (David Gulpilil) to find the murderer of a white woman.
 The tagline is 'All men choose the path they walk.'
Ralph Foster Smart {'1': ", '2': ", '3': ", '4': "} (27 August 1908 – 12 February 2001) was a film and television producer, director, and writer, born in England to Australian parents.
Ten Canoes is a 2006 Australian period drama film directed by Rolf de Heer and Peter Djigirr and starring Crusoe Kurddal.
 The title of the film arose from discussions between de Heer and David Gulpilil about a photograph of ten canoeists poling across the Arafura Swamp, taken by anthropologist Donald Thomson in 1936.
 It is the first ever movie entirely filmed in Australian Aboriginal languages.
The Quiet Room is a 1996 Australian drama film directed by Rolf de Heer.
 It was entered into the 1996 Cannes Film Festival.
Dance Me to My Song is a 1998 Australian drama film directed by Rolf de Heer.
 It was entered into the 1998 Cannes Film Festival.
 The film grossed $175,138 at the box office in Australia.
 Heather Rose described her intention to make the screenplay "not just another soppy disability film".
 Roger Ebert described the film as one where "the human will and spirit overwhelm you".
 David Stratton describes the film as "a warm, positive, affirmation of life".
 An article in Australian Feminist Studies discusses the film in the genre of women's films.
Alexandra's Project is a 2003 Australian drama thriller film written and directed by Rolf de Heer and starring Gary Sweet and Helen Buday.
Rolf de Heer (born 4 May 1951) is a Dutch Australian film director.
 De Heer was born in Heemskerk in the Netherlands but migrated to Sydney when he was eight years old.
 He attended the Australian Film, Television and Radio School in Sydney.
 His company is called Vertigo Productions and is based in Adelaide.
 De Heer primarily makes alternative or arthouse films.
 According to the jacket notes of the videotape, de Heer holds the honor of co-producing and directing the only motion picture, "Dingo", in which the jazz legend Miles Davis appears as an actor.
 Miles Davis collaborated with Michel Legrand on the score.
 He is the subject of the book "Dutch Tilt, Aussie Auteur: The Films of Rolf de Heer" (First edition – Saarbrücken, Germany: VDM, 2009.
 Second edition – Ebook: Starrs via Smashwords.com, 2013) by Dr D. Bruno Starrs.
 A comprehensive study of his films to date, "Dancing to His Song: the Singular Cinema of Rolf de Heer" by film critic Jane Freebury, is published in ebook and print (Currency Press & Currency House, 2015).
Andrew Keith Plain (26 July 1953 – 13 December 2013) is an Australian sound designer and supervising sound editor.
 Through his company, Huzzah Sound, he created the soundtracks for many Australian and international films and television series including Alex Proyas's "Knowing"; Phillip Noyce's "Catch A Fire"; Jane Campion's "In The Cut"; Gillian Armstrong's "Death Defying Acts", "Charlotte Gray" and "Oscar and Lucinda"; Ray Lawrence's "Lantana" and "Jindabyne"; Neil Armfield's "Candy"; Peter Duncan's "Unfinished Sky" and "Children of the Revolution", Sarah Watt's "Look Both Ways", Richard James Allen's "Thursday's Fictions"; Rolf De Heer's "Alexandra's Project", John Curran's "Praise", and Dein Perry's "Bootman".
Charlie's Country is a 2013 Australian drama film directed by Rolf de Heer.
 It was selected to compete in the Un Certain Regard section at the 2014 Cannes Film Festival where David Gulpilil won the award for Best Actor.
 It was also screened in the Contemporary World Cinema section at the 2014 Toronto International Film Festival and awarded the Best Fiction Prize and the Youth Jury Prize at the 2015 International Film Festival and Forum on Human Rights (FIFDH) in Geneva.