Question: Which region did this son of Marion Kozak and British politician who was Leader of the Labour Party and Leader of the Opposition in the 2010s, represent as Member of Parliament in 2005?

full_context: Document 1: Nelli Rokita: Nelli Rokita (née Nelli Arnold, June 26, 1957) is a Polish politician who was elected an MP as a Law and Justice candidate. Her husband Jan Rokita was a prominent activist of a Civic Platform who retreated in September 2007 when Rokita started her political career. She was born in the Soviet Union in an ethnic German family, lived in Germany, where she obtained a university degree in Slavic studies. Rokita first visited Poland in the 1980s on a scholarship to the Jagiellonian University to study the language of political propaganda in the People's Republic of Poland. There she met Jan Rokita, whom she married on July 26, 1994. He is her second husband. Before their wedding, Rokita converted to Catholicism, and her future husband became her godfather. She also has a daughter, Kasia, from her previous marriage.
Document 2: David Miliband: David Wright Miliband (born 15 July 1965) is a British Labour Party politician, charity chief executive and public policy analyst who was the Secretary of State for Foreign and Commonwealth Affairs from 2007 to 2010 and the Member of Parliament (MP) for South Shields from 2001 to 2013. He and his brother, Ed Miliband, were the first siblings to sit in the Cabinet simultaneously since Edward, Lord Stanley, and Oliver Stanley in 1938.
Document 3: South Shields by-election, 2013: The South Shields by-election was a by-election held for the United Kingdom House of Commons constituency of South Shields. It was triggered by the resignation of David Miliband, the previous Member of Parliament (MP) and former Shadow Foreign Secretary, who had held the seat for Labour since 2001. The by-election took place on 2 May 2013, coinciding with local elections across England.
Document 4: Ian Murray (British politician): Ian Murray (born 10 August 1976) is a British Labour Party politician who has represented Edinburgh South as Member of Parliament (MP) since the 2010 general election. He served as an Edinburgh City Councillor for Liberton & Gilmerton Ward from 2003 to 2010, before his Westminster election as an Edinburgh MP. From 2015 to 2017, Murray was the only Labour Party MP representing a Scottish constituency in the House of Commons.
Document 5: Hilary Benn: Hilary James Wedgwood Benn (born 26 November 1953) is a British Labour Party politician who has been the Member of Parliament (MP) for Leeds Central since the by-election in 1999. He served in the cabinet from 2003–10, under the premierships of both Tony Blair and Gordon Brown. From 2010–16, he served in various Labour Party shadow cabinets, most recently as Shadow Foreign Secretary from May 2015 until June 2016, when he was dismissed by Labour leader Jeremy Corbyn. In October 2016, he was elected as the Chair of the new Exiting the European Union Select Committee.
Document 6: Ed Miliband: Edward Samuel Miliband (born 24 December 1969) is a British politician who was Leader of the Labour Party as well as Leader of the Opposition between 2010 and 2015. He became the Member of Parliament (MP) for Doncaster North in 2005, being re-elected in 2010, 2015, and 2017, and served in the Cabinet from 2007-10 under Prime Minister Gordon Brown.
Document 7: Jon Trickett: Jon Hedley Trickett (born 2 July 1950) is a British Labour politician who has been the Member of Parliament (MP) for Hemsworth in West Yorkshire since a 1996 by-election. He served as the Parliamentary Private Secretary to Prime Minister Gordon Brown from 2008 to 2010 and was promoted to the Shadow Cabinet by Ed Miliband in 2011 as Shadow Minister for the Cabinet Office.
Document 8: Tony Blair: Anthony Charles Lynton Blair (born 6 May 1953) is a British politician who served as Prime Minister of the United Kingdom from 2 May 1997 to 27 June 2007 and Leader of the Labour Party from 21 July 1994 to 24 June 2007. He previously served as Leader of the Opposition from 21 July 1994 to 2 May 1997. He is the most recent British Labour Party leader to have won a general election.
Document 9: Markot: Markot ("Ruch Wychodzenia z Bezdomnosci" - "Movement Out of Homelessness") is a Polish social movement, aimed at helping homeless people across Poland. It was founded by Marek Kotanski, a charity worker and campaigner on behalf of disadvantaged people and was based on an idea from late 1980s and early 1990s. First center of the movement was opened in a village of Lutynka, another one was opened in Jeleni Ruczaj, then a "School of Life" was founded in the village of Wandzin. The movement was legalized in 1994, in the same year in Warsaw, a Center of Help was opened. It is estimated that in the 1990s, some 50% of beds for Polish homeless persons were administered by Markot. Marek Kotanski, leader of the movement, established "Day of the Homeless" (April 14) as well as an honorary title "Friend of the Homeless".
Document 10: Ellen Dahrendorf: Ellen Dahrendorf, Lady Dahrendorf (née Ellen Joan Krug) is a British historian and translator of Russian political works, and the former wife (1980–2004) of the late German/British academic and politician Ralf Dahrendorf.
Document 11: Stas Maliszewski: Born in August 1944 in German-occupied Poland, Maliszewski and his family (his parents, grandparents, and two brothers) soon became refugees, fleeing ahead of the advancing Soviet army. They wound up in a displaced persons camp in West Germany and in 1951 came to the United States. After processing through Ellis Island, they settled in Davenport, Iowa, where they were sponsored by the First Presbyterian Church. As a high school football player at Assumption High School in Davenport (where one of his classmates was future Miami Dolphins receiver Karl Noonan) Maliszewski was heavily recruited by Notre Dame, but in his senior year, Jim Leach, a Davenport resident and Princeton sophomore home on Christmas break, recruited him for Princeton.
Document 12: Jack Dromey: John Eugene Joseph "Jack" Dromey (born 29 September 1948) is a British Labour Party politician and trade unionist. He has been the Member of Parliament (MP) for Birmingham Erdington since the 2010 general election and was appointed Shadow Minister for Communities and Local Government in the Ed Miliband shadow front bench. He became Shadow Policing Minister in 2013 but resigned from this position on 27 June 2016. On 10 October 2016, he returned to the frontbench by becoming Shadow Minister for Labour.
Document 13: Marion Kozak: Marion Kozak or Marion Kozak Miliband (born 1934 as Dobra Jenta Kozak, also known as Maria Kozak) is a Polish-born British activist. She emigrated to the United Kingdom in the 1950s. In 1961 she married Ralph Miliband (1924–1994) and their two sons, David Miliband and Ed Miliband, have risen to prominence in modern-day British politics.
Document 14: Alexandra Aitken: Uttrang Kaur Khalsa (born Alexandra Aitken on 14 June 1980), also known earlier as Ally Aitken, is a British citizen and an environmental campaigner, actress, artist and socialite. She is the daughter of former British government Cabinet minister Jonathan Aitken. She is the great granddaughter of John Maffey,1st Baron Rugby. She became famous when she was born as her birth was marked by President Richard Nixons security team closing the roads to practice emergency presidential protocol to deliver flowers to the hospital to give to Alexandra her twin Victoria and her Mother Lolitza . She became famous modelling for "GQ" magazine. As a model she subsequently appeared in Vogue , Tatler, Vanity Fair and many other publications. As an actress she had lead roles in well reviewed west end plays and off west end plays in film she worked alongside award-winning directors such as Mike Figgis and Roger Michell. In 2010, she married Inderjot Singh, a Sikh man, and realised Sikhism as a faith which includes all. Her primary reason for becoming Sikh, she was quoted saying, is that "It includes the most views."
Document 15: Andy Burnham Labour Party leadership campaign, 2015: Andy Burnham Labour Party leadership campaign, 2015
ground_truth: Doncaster North