question: Which country Claude Nelson Warren's wife is from?
context: [["Edmund Newell", ["Edmund Newell( July 27, 1857 \u2013 December 23, 1915), better known as General Grant Jr. or Major Edward Newell, was a 19th- century dwarf who gained fame as an associate of P. T. Barnum.", "He was born in Chicago, Illinois, to Edmund S. Newell and Sarah Ellen Jimmerson.", "Edmund married Minnie Warren in July, 1877 in Lock Haven, Pennsylvania.", "Minnie was also a dwarf, and so was her sister, Lavinia Warren, wife of General Tom Thumb.", "Minnie died in childbirth in 1878, and was buried in Nemasket Hill Cemetery, Middleborough, Massachusetts.", "After her death, Edmund moved to England and married Mary Ann Drake, a woman of normal stature, on April 5, 1888 in St. Giles, London, England.", "They had two children: Edmund Charles Jeffreys Newell and Daisy Louise Newell.", "Edmund died on December 23, 1915 in Marylebone, London, England."]], ["Ali Rahuma", ["Ali Khalifa Rahuma( born May 16, 1982) is a Libyan football midfielder who's nationality is Libyan.", "He currently plays for Al- Ittihad, and is a member of the Libya national football team."]], ["Elizabeth von Till Warren", ["Elizabeth von Till Warren( born April 16, 1934) is an American historian and preservationist.", "She has expertise in the history of water development in the Mojave Desert and the Las Vegas Valley in particular.", "She also has expertise in the historical route of the Old Spanish Trail in Southern Nevada.", "She is married to Claude Warren.", "They have four children: Claude Jr., Susan, Louis, and Jonathan."]], ["Eleni Gabre-Madhin", ["Eleni Zaude Gabre- Madhin, an Ethiopian economist with Swiss nationality, is a former Chief Executive Officer of the Ethiopia Commodity Exchange( ECX).", "She has had many years of experience working on agricultural markets \u2013 particularly in Sub- Saharan Africa \u2013 and has held senior positions in the World Bank, the International Food Policy Research Institute( Washington), and United Nations( Geneva)."]], ["Nayelly Hern\u00e1ndez", ["Nayelly Hern\u00e1ndez( born 23 February 1986) is a former Mexican female professional squash player.", "She has represented Mexico internationally in several international competitions including the Central American and Caribbean Games, Pan American Games, Women's World Team Squash Championships.", "Nayelly achieved her highest career ranking of 57 in October 2011 during the 2011 PSA World Tour.", "Her husband Chris Walker whose nationality is English is also a professional squash player.", "She joined the Trinity College in 2008 as the first Mexican female to join a US college for squash and graduated in 2010."]], ["Khalid al-Habib", ["Khalid al- Habib also believed to use the nom de guerre Khalid al Harbi is an Al- Qaeda leader who has overseen Al- Qaeda operations in Afghanistan.", "In 2005 it was reported that al- Habib died in a US missile strike on the Pakistani village of Damadola though it is unclear whether this is the case as Pakistani officials have claimed that no Al- Qaeda leaders died in the attack.", "al- Habib's nationality is not clear with sources claiming he may be Egyptian or Moroccan."]], ["Roberto Savio", ["Roberto Savio( born in Rome, Italy, but also holding Argentine nationality) is a journalist, communication expert, political commentator, activist for social and climate justice and advocate of global governance.", "He has spent most of his career with Inter Press Service( IPS), the news agency which he founded in 1964 along with Argentine journalist Pablo Piacentini.", "Savio studied Economics at the University of Parma, followed by post -graduate courses in Development Economics under Gunnar Myrdal, History of Art and International Law in Rome.", "He started his professional career as a research assistant in International Law at the University of Parma."]], ["Alfred Nelson-Williams", ["Major General Alfred Claude Nelson- Williams, GCOR is a retired Major General in the Republic of Sierra Leone Armed Forces( RSLAF).", "Nelson- Williams serves as the Sierra Leone Deputy High Commissioner to Nigeria Nelson- Williams previous served as Chief of Defense Staff( CDS) for Sierra Leone from 2008 to 2010.", "Nelson- Williams holds degrees from Junior and Senior Command and Staff Colleges in Ghana, as a Fellow of the Nigeria War College, in Management and Public Administration at the University of Ghana at Legon, and as a Master of Science at the University of Ibadan in Nigeria.", "His honors and awards include an ECOMOG Medal as well as long service, efficiency and gallantry medals.", "He also earned a national award as Grand Officer of the Order of Rokel."]], ["Baglan Mailybayev", ["Baglan Mailybayev( in Kazakh \u0411\u0430\u0493\u043b\u0430\u043d \u0410\u0441\u0430\u0443\u0431\u0430\u0439\u04b1\u043b\u044b \u041c\u0430\u0439\u043b\u044b\u0431\u0430\u0435\u0432) was born on 20 May 1975 in Zhambyl region, Kazakhstan.", "His nationality is Kazakh.", "He is a politician of the Republic of Kazakhstan, Deputy Head of the Presidential Administration of the Republic of Kazakhstan, Doctor of Law( 2002)( under the supervision of Professor Zimanov S.Z.- scientific advisor and academician of National Academy of Sciences of the Republic of Kazakhstan) and Ph.D. in Political Science( 1998)."]], ["Claude Nelson Warren", ["Claude Nelson Warren( born 1932) is a California Desert anthropologist and specialist in early humans in the Far West and has been instrumental in defining the San Dieguito and La Jolla cultural complexes.", "He also has an interest in the history of anthropology.", "He is a distinguished professor emeritus in Anthropology from the University of Nevada, Las Vegas.", "He is married to Elizabeth von Till Warren.", "They have four children Claude Jr., Susan, Louis, and Jonathan."]]]
supporting_facts: [["Claude Nelson Warren", 3], ["Elizabeth von Till Warren", 0]]
evidences: [["Claude Nelson Warren", "spouse", "Elizabeth von Till Warren"], ["Elizabeth von Till Warren", "country of citizenship", "American"]]
answer: American