question: Do director of film Ithemba and director of film Oklahoma Blues share the same nationality?
context: [["Peter Levin", ["Peter Levin is an American director of film, television and theatre."]], ["Hanro Smitsman", ["Hanro Smitsman, born in 1967 in Breda( Netherlands), is a writer and director of film and television."]], ["Ian Barry (director)", ["Ian Barry is an Australian director of film and TV."]], ["Elinor Burkett", ["Elinor Burkett( born October 9, 1946) is an American journalist, author, film producer, and documentary director.", "A film produced by her,\" Music by Prudence\", won the 2009 Academy Award for Best Documentary( Short Subject) on March 7, 2010."]], ["Oklahoma Blues", ["Oklahoma Blues is a 1948 American Western film directed by Lambert Hillyer and written by Bennett Cohen.", "The film stars Jimmy Wakely, Dub Taylor, Virginia Belmont, I. Stanford Jolley, Zon Murray and George J. Lewis.", "The film was released on March 28, 1948, by Monogram Pictures."]], ["Ben Cura", ["Ben Cura( born 30 September 1988) is a British- Argentine actor and director of film, television and theatre."]], ["Brian Johnson (special effects artist)", ["Brian Johnson( born 1939 or 1940) is a British designer and director of film and television special effects."]], ["Jason Moore (director)", ["Jason Moore( born October 22, 1970) is an American director of film, theatre and television."]], ["IThemba", ["iThemba is a feature-length documentary film shot in Zimbabwe, directed and produced by Elinor Burkett and produced by Errol Webber, who also shot and edited the film.", "It premiered at the International Documentary Film Festival Amsterdam in November 2010.", "The film follows the members of the Zimbabwean band Liyana, a group of eight musicians with physical disabilities who navigate a country where many of their neighbors consider them to be cursed.", "The funny and talented young people take viewers with them as they travel across the city of Bulawayo and into remote villages, to rural bottle shops and urban marketplaces, inside the huts of traditional healers and the neighborhoods of the urban poor \u2013 into an Africa rarely seen by outsiders, a place where tradition is not necessarily gentle, where it threatens to trap the unfortunate, and where a few fight back.", "Meet Marvelous Mbulo, the lady-killing lead singer, whose wit provides the film's heart.", "Listen to Prudence Mabhena, Liyana's musical heart.", "And travel Zimbabwe with the wise-cracking Energy Maburutse, whose humor belies the seriousness of his situation.", "The film is filled with an endless flow of the band's jokes and satire and their amazing Afro-fusion melodies, most composed by members of Liyana.", "Shot during and in the wake of the Zimbabwean presidential election, 2008 and the country's economic meltdown by an American, Zimbabwean and Jamaican team, the film unfolds against the backdrop of enormous political tension and the daily struggle to find a bank that actually had cash, to buy food although the store shelves were empty, and to navigate streets pocked with wheelchair-mangling potholes."]], ["Lambert Hillyer", ["Lambert Harwood Hillyer( July 8, 1893 \u2013 July 5, 1969) was an American film director and screenwriter."]]]
supporting_facts: [["IThemba", 0], ["Oklahoma Blues", 0], ["Elinor Burkett", 0], ["Lambert Hillyer", 0]]
evidences: [["IThemba", "director", "Elinor Burkett"], ["Oklahoma Blues", "director", "Lambert Hillyer"], ["Elinor Burkett", "country of citizenship", "American"], ["Lambert Hillyer", "country of citizenship", "American"]]
answer: yes