Question: In which county was Sherry Mangan born?

full_context: Document 1: Masha Hamilton: Masha Hamilton is a United States journalist and the author of five novels. She founded two world literacy projects, and has worked as head of communications for the US Embassy in Afghanistan and the NGO Concern Worldwide US.
Document 2: Leverett Saltonstall I: Leverett Saltonstall (June 13, 1783 – May 8, 1845), was a member of the United States House of Representatives from Massachusetts who also served as Speaker of the Massachusetts House of Representatives, President of the Massachusetts Senate, the first Mayor of Salem, Massachusetts and a Member of the Board of Overseers of Harvard College.
Document 3: François Maspero: François Maspero (19 January 1932, Paris – 11 April 2015, Paris) was a French author and journalist, best known as a publisher of leftist books in the 1970s. He has also worked as a translator, translating the works of Joseph Conrad and John Reed, author of "Ten Days that Shook the World", among others. He was awarded the Prix Décembre in 1990 for "Les Passagers du Roissy-Express".
Document 4: Pioneers of American Freedom: Rudolf Rocker, who had been strongly influenced by Benjamin Tucker, started work on "Pioneers of American Freedom" during World War II. Professor Arthur E. Briggs started translating the book into English from Rocker's native German in 1941. He took over for Rocker's previous English translator Ray E. Chase as he had died. The book was published with the help of the Rocker Publishing Committee in 1949.
Document 5: The Times: Kim Philby, a Soviet double agent, was a correspondent for the newspaper in Spain during the Spanish Civil War of the late 1930s. Philby was admired for his courage in obtaining high-quality reporting from the front lines of the bloody conflict. He later joined MI6 during World War II, was promoted into senior positions after the war ended, then eventually defected to the Soviet Union in 1963.
Document 6: Jay Livingstone: Jay Livingstone is an American politician who has served in the Massachusetts House of Representatives since July 2013. He is a resident of Back Bay, Boston, a member of the Democratic Party. He won a special election to succeed Martha M. Walz, unopposed in the June 25 general election after winning the May 28 primary. He was sworn in July 17, 2013. He has since won re-election in 2014, 2016, and 2018.
Document 7: Jan Maria Gisges: He studied philology of Polish at University of Warsaw. Between 1943 and 1945 he was imprisoned by German Nazis in Auschwitz-Birkenau and other Nazi concentration camps. After the war he lived in Kielce where he worked for the county government. He was also the editor of the regional monthly "Cychry". He published his first poems in official media in 1949. Since 1949 he lived in Warsaw. He was an activist of the Polish Union of Writers.
Document 8: Cleon Turner: Cleon H. Turner (born December 29, 1945 in Brockton, Massachusetts) is a former state representative in Massachusetts. He represented the First Barnstable District of Brewster from 2005 to 2015. Turner graduated from Silver Lake Regional High School, earned his B.A. from the University of Southern Maine, an A.S. from the University of Maine and his J.D. from Suffolk University Law School. He was elected in 2004 and began his term in 2005. In December 2013, he announced his retirement effective January 6, 2015.
Document 9: Joseph A. Melley: Joseph Aloysius Melley (March 1, 1902 – October 28, 1983) was a Massachusetts attorney and politician who served as the thirty ninth Mayor of Chelsea, Massachusetts, USA, and in both houses of the Massachusetts legislature.
Document 10: Michael Berland: Michael Berland attended The Latin School of Chicago and graduated magna cum laude from the University of Massachusetts Amherst, where he was a Commonwealth Scholar. He received his initial training at the Social and Demographic Research Institute.
Document 11: Boston: Federally, Boston is split between two congressional districts. The northern three-fourths of the city is in the 7th district, represented by Mike Capuano since 1998. The southern fourth is in the 8th district, represented by Stephen Lynch. Both are Democrats; a Republican has not represented a significant portion of Boston in over a century. The state's senior member of the United States Senate is Democrat Elizabeth Warren, first elected in 2012. The state's junior member of the United States Senate is Democrat Ed Markey, who was elected in 2013 to succeed John Kerry after Kerry's appointment and confirmation as the United States Secretary of State.
Document 12: The Times: Between 1941 and 1946, the left-wing British historian E.H. Carr was Assistant Editor. Carr was well known for the strongly pro-Soviet tone of his editorials. In December 1944, when fighting broke out in Athens between the Greek Communist ELAS and the British Army, Carr in a Times editorial sided with the Communists, leading Winston Churchill to condemn him and that leader in a speech to the House of Commons. As a result of Carr's editorial, The Times became popularly known during that stage of World War II as the threepenny Daily Worker (the price of the Daily Worker being one penny).
Document 13: Michael A. Costello: Michael A. Costello (born May 5, 1965 in Lynn, Massachusetts) is a former State Representative for the Massachusetts House of Representatives, who represented the first district of Essex County, Massachusetts. Costello graduated from Salem State University in 1989 with a Bachelor of Science, and from Suffolk University Law School with his Juris Doctor in 1996. Costello served in the House from 2003 to 2014.
Document 14: Marga Faulstich: A talented young woman, Faulstich quickly advanced in her career – from graduate assistant to technician, then to scientific assistant, and finally to scientist. Her fiancé died in the Second World War, and from then on, she focused only on her career. In 1942 she studied chemistry while continuing to work at Schott. She could not finish her studies because the situation changed after the Second World War. Jena belonged to the Soviet occupation zone; however, the most advanced glassmaking facility in the world was located in Jena and the Western Allies wanted to obtain and use this know-how. Therefore, 41 specialists and managers of Schott AG were brought to the western sector, including Marga Faulstich.
Document 15: Sherry Mangan: Sherry Mangan (27 June 1904, Lynn, Massachusetts, USA – 24 June 1961, Rome, Italy) was an American writer, journalist, translator, editor, and book designer. He was a Marxist political activist in the Trotskyist movement from 1935 to 1961. During the Nazi occupation of Paris he was actively associated with left-wing underground operations.
ground_truth: Essex County
sub_queries: Sherry Mangan >> place of birth Answer: Lynn
Lynn >> located in the administrative territorial entity Answer: Essex County