Question: Bari Lurie serves as chief of staff to a woman that was a special correspondent for what news station from 2011 to 2014?
Context: Bari Lurie (born Bari Allison Lurie) is an American non-profit executive who serves as chief of staff to Chelsea Clinton at the Clinton Foundation.  She previously worked for Hillary Clinton and the Washington Nationals, and has been described as one of the most influential people in Clinton's orbit. Chelsea Victoria Clinton (born February 27, 1980) is the only child of former U.S. President Bill Clinton and former U.S. Secretary of State and 2016 presidential candidate Hillary Clinton.  She was a special correspondent for NBC News from 2011 to 2014 and now works with the Clinton Foundation and Clinton Global Initiative.  Since 2011, she has taken on a prominent role at the foundation and has a seat on its board. Christopher Morris (born 28 March 1938) is an English news presenter, journalist and author.  His most high-profile roles were those of television newsreader and special correspondent for BBC News and senior news presenter and foreign correspondent for Sky News, the first 24-hour satellite television news channel in the United Kingdom launched by British Sky Broadcasting in 1989.  During a career in broadcasting and journalism spanning 60 years he has reported from 120 countries, including 16 wars, and nearly lost his life in a series of minefield explosions while covering the Turkish invasion of Cyprus in 1974. John Yang (born February 10, 1958) is an American Peabody Award-winning television news correspondent, commentator and as of February 2016, a special correspondent for the PBS NewsHour.  He previously worked for NBC as a correspondent and commentator, covering issues for all NBC News programming, including "NBC Nightly News with Brian Williams", "Today", and MSNBC.  He has also worked for ABC News as a correspondent.  Yang is one of several openly gay national television correspondents. Hyunju "Juju" Chang (born September 17, 1965) is an American television journalist for ABC News, and currently serves as an anchor of "Nightline".  She previously served as a special correspondent and fill-in anchor for "Nightline".  Previously she was the news anchor for ABC News’ morning news program "Good Morning America" from 2009–2011. Martin Fletcher (born 1947) is an author and former NBC News' Middle East correspondent and Tel Aviv Bureau chief.  He left NBC News after 32 years to work on his fourth book (and second novel).  He returned to NBC in 2010 as a freelance Special Correspondent.  He also reports for PBS Weekend Newshour.  . Medford Cable News, (MCN) is the City of Medford, MA's only non-profit broadcast news station.  Owned and operated by Medford Community Cablevision, Inc. MCN began in 2010 as a short news topic program that aired on Comcast channel 3.  After Medford Community Cablevision was internationally recognized by the Alliance for Community Media for "Overall Excellence in Public Television," the news station expanded to live broadcasts and an online publication.  MCN reports on local, government, business, and entertainment news.  The company plans to also feature live weather and sports reports by July 2011. Jamie Sue Gangel (born 1955) is an American television reporter based in the United States.  She became a national correspondent for the NBC News' "Today" Show in February 1992.  Since joining NBC News in 1983 as a general assignment and political correspondent based in Washington, DC, Gangel had been a frequent contributor to "NBC Nightly News", "Today", Dateline NBC and MSNBC.  Gangel began a new phase of her career with CNN in August 2015, as CNN Special Correspondent. Lloyd Robertson, OC (born January 19, 1934) is a Canadian journalist and former news anchor who is special correspondent on CTV's weekly magazine series, "W5".  Robertson served as the chief anchor and senior editor of CTV's national evening newscast, "CTV News with Lloyd Robertson," until September 2011, when he retired from the "CTV National News" team.  He co-hosted "W5" from 2011 to 2016. Rageh Omaar ( ; Somali: "Raage Oomaar" , Arabic: ‎ ‎ ; born 19 July 1967) is a Somali-born British journalist and writer.  He was a BBC world affairs correspondent, where he made his name reporting from Iraq.  In September 2006, he moved to a new post at Al Jazeera English, where he presented the nightly weekday documentary series "Witness" until January 2010.  "The Rageh Omaar Report", first aired February 2010, is a one-hour, monthly investigative documentary in which he reports on international current affairs stories.  From January 2013, he became a special correspondent and presenter for ITV News, reporting on a broad range of news stories, as well as producing special in-depth reports from all around the UK and further afield.  A year after his appointment, Omaar was promoted to International Affairs Editor for ITV News.  Since October 2015, alongside his duties as International Affairs Editor, he has been a Deputy Newscaster of ITV News at Ten.  Since September 2017 Ommar has occasionally presented the ITV Lunchtime News "including the ITV News London Lunchtime Bulletin" and the ITV Evening News.
Answer: NBC News