Question: Who is the director of the short film based on which Australian psychological horror film The Babadook was made?

full_context: Document 1: Mother!: Mother! (stylized as mother!) is a 2017 American psychological horror film, written and directed by Darren Aronofsky and starring Jennifer Lawrence, Javier Bardem, Ed Harris, and Michelle Pfeiffer. The plot follows a young woman whose tranquil life with her husband at their country home is disrupted by the arrival of a mysterious couple.
Document 2: Babai (film): Babai is a 2015 internationally co-produced drama film directed by Visar Morina. Morina won the award for Best Director at the 2015 Karlovy Vary International Film Festival. The film was selected as the Kosovan entry for the Best Foreign Language Film at the 88th Academy Awards but it was not nominated. It is the most expensive Kosovan film produced, with a budget of €1.7 million.
Document 3: The Babadook: The Babadook is a 2014 Australian psychological horror film written and directed by Jennifer Kent in her directorial debut, and produced by Kristina Ceyton and Kristian Moliere. The film stars Essie Davis, Noah Wiseman, Daniel Henshall, Hayley McElhinney, Barbara West, and Ben Winspear. It is based on the 2005 short film "Monster", also written and directed by Kent.
Document 4: The Monster (2016 film): The Monster is a 2016 American horror film written and directed by Bryan Bertino. It stars Zoe Kazan and Ella Ballentine. The film was released through DirecTV Cinema on October 6, 2016, before opening in a limited release on November 11, 2016, via A24.
Document 5: A Monster Calls (film): A Monster Calls is a 2016 dark fantasy drama film directed by J. A. Bayona and written by Patrick Ness, based on his novel of the same name. The film stars Sigourney Weaver, Felicity Jones, Toby Kebbell, Lewis MacDougall, and Liam Neeson, and tells the story of Conor (MacDougall), a child whose mother (Jones) is terminally ill; one night, he is visited by a giant tree-like monster (Neeson), who states that he will come back and tell Conor three stories.
Document 6: Gareth Evans (director): Gareth Huw Evans (born 1980) is a Welsh film director, screenwriter, film editor and action choreographer.
Document 7: Jennifer Kent: Jennifer Kent is an Australian actress, writer and director, best known for her horror film "The Babadook" (2014), which was her directorial debut. She is currently filming her second film, "The Nightingale".
Document 8: Jennifer Prediger: Jennifer Prediger is New York City–based actress, writer, and director known for the films "Uncle Kent" (2011), "Red Flag" (2012), and "Apartment Troubles" (2014)—her directorial debut with collaborator Jess Weixler. Prediger also played and wrote "Ask Umbra", the "world's most trusted eco advice columnist," on Grist.org.
Document 9: Gillian Armstrong: Gillian May Armstrong (born 18 December 1950) is an award-winning Australian feature film and documentary director, who specializes in period drama. Her films often feature female perspectives and protagonists.
Document 10: Leigh Whannell: Leigh Whannell (born 17 January 1977) is an Australian screenwriter, producer, director and actor. He is best known for writing films directed by his friend James Wan, including "Saw" (2004), "Dead Silence" (2007), "Insidious" (2011) and "" (2013). Whannell made his directorial debut on "", which was released in 2015.
Document 11: Cate Shortland: Cate Shortland (born 10 August 1968) is an Australian writer and director of film and television.
Document 12: The Nightingale (2017 film): The Nightingale is an upcoming Australian period thriller film written and directed by Jennifer Kent. Set in 1825 in the British penal colony of Van Diemen's Land (now the Australian state of Tasmania), the film follows a young convict woman seeking revenge on a soldier who murdered her family. It began filming in March 2017.
Document 13: Emily Browning: Emily Jane Browning (born 7 December 1988) is an Australian actress and singer.
Document 14: James Wan: James Wan (born 27 February 1977) is a Malaysian-Australian film director, screenwriter, and producer.
Document 15: Stoker (film): Stoker is a 2013 British-American psychological thriller-drama film written by Wentworth Miller and directed by South Korean filmmaker Park Chan-wook in his English-language debut. It stars Mia Wasikowska, Matthew Goode, and Nicole Kidman, and was released on 1 March 2013. The film is dedicated to producer Tony Scott, who died after production.
ground_truth: Jennifer Kent