Question: What film starring Natalie Portman appeared at the 67th Venice International Film Festival?

full_context: Document 1: Swan Lake (Bourne): Matthew Bourne's "Swan Lake" was first staged at Sadler's Wells theatre in London in 1995. The longest running ballet in London's West End and on Broadway, it has been performed in the UK, Los Angeles, Europe, Australia, South Korea, Japan, Israel and Singapore. The story is based on the Russian romantic ballet "Swan Lake", from which it takes the music by Tchaikovsky and the broad outline of the plot. Bourne's rendering is best known for having the traditionally female parts of the swans danced by men.
Document 2: 2010 Cannes Film Festival: The 63rd Cannes Film Festival was held from 12 to 23 May 2010, in Cannes, France. The Cannes Film Festival, hailed as being one of the most recognized and prestigious film festivals worldwide, was founded in 1946. It consists of having films screened in and out of competition during the festival; films screened in competition compete for the Palme d'Or award. The award in 2010 was won by "Uncle Boonmee Who Can Recall His Past Lives", a Thai film directed by Apichatpong Weerasethakul. This was determined by the festival's jury members who reviewed films screened in competition. American film director Tim Burton was the president of the jury for the international competition, and other members of the jury for that competition included actors, screenwriters and composers, such as Kate Beckinsale, Emmanuel Carrère, Benicio del Toro, and Alexandre Desplat. Other categories for films screened in competition that have their own separate juries for other awards are for Short Films and the Un Certain Regard category.
Document 3: 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 4: 67th Venice International Film Festival: The 67th annual Venice International Film Festival held in Venice, Italy, took place from 1 to 11 September 2010. American film director and screenwriter Quentin Tarantino was head of the Jury. John Woo was awarded the Golden Lion for Lifetime Achievement prior to the start of the Festival. The opening film was Darren Aronofsky's "Black Swan".
Document 5: Requiem for a Dream: Requiem for a Dream is a 2000 American psychological drama film directed by Darren Aronofsky and starring Ellen Burstyn, Jared Leto, Jennifer Connelly, and Marlon Wayans. The film is based on the novel of the same name by Hubert Selby, Jr., with whom Aronofsky wrote the screenplay.
Document 6: Black Swan (film): Black Swan is a 2010 American psychological horror film directed by Darren Aronofsky. The screenplay by Mark Heyman, Andres Heinz and John McLaughlin is from a story by Heinz. It stars Natalie Portman, Vincent Cassel, Mila Kunis, Barbara Hershey and Winona Ryder. The plot revolves around a production of Tchaikovsky's "Swan Lake" ballet by a prestigious New York City company. The production requires a ballerina to play the innocent and fragile White Swan, for which the committed dancer Nina (Portman) is a perfect fit, as well as the dark and sensual Black Swan, which are qualities better embodied by the new arrival Lily (Kunis). Nina is overwhelmed by a feeling of immense pressure when she finds herself competing for the part, causing her to lose her tenuous grip on reality and descend into a living nightmare.
Document 7: Black Swan dance double controversy: "Black Swan" is a 2010 American psychological thriller film about a ballet dancer directed by Darren Aronofsky and starring Natalie Portman, Vincent Cassel, and Mila Kunis. After the 83rd Academy Awards, in which Portman won the Oscar for Best Actress for her role in the film as a ballerina, controversy arose over how much credit for the dancing in the film was being given to her and how much to her "dance double", American Ballet Theatre soloist Sarah Lane.
Document 8: 68th Venice International Film Festival: The 68th annual Venice International Film Festival was held in Venice, Italy between 31 August and 10 September 2011. American film director Darren Aronofsky was announced as the Head of the Jury. American actor and film director Al Pacino was presented with the Glory to the Film-maker award on 4 September, prior to the premiere of his upcoming film "Wilde Salomé". Marco Bellocchio was awarded with the Golden Lion for Lifetime Achievement in September. The festival opened with the American film "The Ides of March", directed by George Clooney.
Document 9: 70th Venice International Film Festival: The 70th annual Venice International Film Festival took place in Venice, Italy from 28 August to 7 September 2013. American film director William Friedkin was presented with a lifetime achievement award. Italian film director Bernardo Bertolucci was the President of the Jury. He was previously the President of the Jury at the 40th edition in 1983. "Gravity", directed by Alfonso Cuarón, was the opening film of the festival. Italian actress Eva Riccobono hosted the opening and closing nights of the festival.
Document 10: List of accolades received by Black Swan: "Black Swan" is a 2010 independent psychological thriller film directed by Darren Aronofsky. It premiered as the opening film for the 67th Venice International Film Festival. The film had a limited release in selected cities in North America on December 3 and took in a total of about $415,800 on its opening day. After "Black Swan"' s opening weekend it grossed over $1.4 million, averaging around $80,200 per theater, the second highest per location for the opening weekend of 2010. When "Black Swan" finished its worldwide theatrical run, it had achieved blockbuster status with ticket revenue amounting to more than $325 million. Critics appreciated the film, with review aggregator website Rotten Tomatoes reporting an approval rating of 88 percent and placed it among their lists for the year's best films.
Document 11: 73rd Venice International Film Festival: The 73rd annual Venice International Film Festival was held from 31 August to 10 September 2016. English director Sam Mendes was the President of the Jury for the main competition. The opening night film was Damien Chazelle's musical "La La Land". The Golden Lion was awarded to Lav Diaz's film "The Woman Who Left".
Document 12: 71st Venice International Film Festival: The 71st annual Venice International Film Festival took place in Venice, Italy between 27 August to 6 September 2014. The Swedish film "A Pigeon Sat on a Branch Reflecting on Existence" won the Golden Lion award. Joshua Oppenheimer's "The Look of Silence" won the Silver Lion Grand Jury Prize.
Document 13: The Prestige (film): The Prestige is a 2006 British-American mystery thriller film directed by Christopher Nolan, from a screenplay adapted by Nolan and his brother Jonathan from Christopher Priest's 1995 novel of the same name. Its story follows Robert Angier and Alfred Borden, rival stage magicians in London at the end of the 19th century. Obsessed with creating the best stage illusion, they engage in competitive one-upmanship with tragic results. The film stars Hugh Jackman as Robert Angier, Christian Bale as Alfred Borden, and David Bowie as Nikola Tesla. It also stars Scarlett Johansson, Michael Caine, Piper Perabo, Andy Serkis, and Rebecca Hall. The film reunites Nolan with actors Bale and Caine from "Batman Begins" and returning cinematographer Wally Pfister, production designer Nathan Crowley, film score composer David Julyan, and editor Lee Smith.
Document 14: The Swan Princess: The Swan Princess is a 1994 American animated musical fantasy film based on the ballet "Swan Lake". Featuring the voice talents of Howard McGillin, Michelle Nicastro, Jack Palance, John Cleese, Steven Wright, Sandy Duncan, James Arrington, Joel McKinnon Miller, Mark Harelik, Brian Nissen, Steve Vinovich, and Dakin Matthews, the film is directed by a former Disney animation director, Richard Rich, with a music score by Lex de Azevedo. This film was originally owned by Sony Wonder. However, when New Line Cinema merged with Warner Bros. in March 2008, this was sold to Warner Bros. (though the home video distribution of "The Swan Princess" was kept by Sony Wonder). It was released theatrically on November 18, 1994, where it received mixed reviews from critics. The film has been followed by six direct-to-video sequels.
Document 15: Matthew Libatique: Matthew Libatique (born July 19, 1968) is an American cinematographer who is best known for his work with director Darren Aronofsky on the films "π" (1998), "Requiem for a Dream" (2000), "The Fountain" (2006), "Black Swan" (2010), "Noah" (2014) and "Mother!" (2017).
ground_truth: Black Swan