Question: What region is Arda Green's birth city located in?

full_context: Document 1: Elizabethtown, Pennsylvania: Elizabethtown (Pennsylvania Dutch: "Betzischteddel") is a borough in Lancaster County, southeast of Harrisburg. Small factories existed at the turn of the 20th century when the population in 1900 was 1,861. There was a slight increase in the next decade, with 1,970 people living in Elizabethtown in 1910. As of the 2000 census, the population of the borough was 11,887. Elizabethtown is commonly referred to in south-central Pennsylvania as "E-Town." This nickname is also used for the local college and high school.
Document 2: Cresson, Pennsylvania: Cresson is a borough in Cambria County, Pennsylvania, United States. Cresson is east of Pittsburgh. It is above in elevation. Lumber, coal, and coke yards were industries that had supported the population which numbered 1,470 in 1910. The borough is part of the Johnstown Metropolitan Statistical Area, although state and local sources list it as part of the Altoona area due to being much closer to that city. The population of Cresson at the 2010 census was 1,711.
Document 3: Adamstown, Pennsylvania: Adamstown (Pennsylvania Dutch: "Adamschteddel") is a borough in Lancaster County which has grown into Berks County in the U.S. state of Pennsylvania. The population was 1,789 at the 2010 census. Of this, 1,772 were in Lancaster County, and only 17 were in Berks County.
Document 4: Butler Township, DeKalb County, Indiana: Butler Township is one of fifteen townships in DeKalb County, Indiana. As of the 2010 census, its population was 1,691 and it contained 679 housing units.
Document 5: Samuel W. Alderson: Alderson was born in Cleveland, Ohio but was raised in southern California as a toddler where his Romanian-immigrant father ran a custom sheet-metal and sign shop. He graduated from high school at the age of 15 and went on to intermittently study at Reed College, Caltech, Columbia and UC Berkeley. He frequently interrupted his education to help out with the family sheet-metal business. He completed his formal education at the University of California, Berkeley under the tutelage of J. Robert Oppenheimer and Ernest O. Lawrence, but did not complete his doctoral dissertation.
Document 6: Ursula Goodenough: Ursula Goodenough, daughter of Erwin Ramsdell Goodenough and Evelyn Goodenough Pitcher, earned a B.A. in zoology from Barnard College, an M.A. in zoology at Columbia University and her Ph.D. in Biology at Harvard University. She was an assistant and associate professor of biology at Harvard from 1971-1978 before moving to Washington University. She wrote three editions of a widely adopted textbook, "Genetics". She served as president of The American Society for Cell Biology in 1984-85, was elected to the Cellular and Developmental Biology section of the American Academy of Arts and Sciences in 2009, and elected a Fellow of the American Society for Microbiology in 2013.
Document 7: Prospect, Pennsylvania: Prospect is a borough in Butler County, Pennsylvania, United States. As of the 2010 census, the borough had a population of 1,169.
Document 8: Gregory Pence: He graduated cum laude with a B.A. from William and Mary and a Ph.D. from New York University, writing under visiting Australian bioethicist Peter Singer. Professor Pence taught a required course in bioethics for thirty-four years to 165 medical students at the University of Alabama School of Medicine. In 2006, Samford University awarded him a Pellegrino Medal for achievement in medical ethics. In 2011, he switched from teaching in the medical school to chairing the UAB Department of Philosophy, which he did from 2012 to 2018, after which he continued to be a professor in the department. In 1995, he began to direct, and continues to direct now, UAB's EMSAP (Early Medical School Acceptance Program).
Document 9: Arda Green: Arda Green was born in Prospect, Pennsylvania, daughter of Vennis A. Green and Melva Stevenson Green. Her father taught chemistry, and her sister Metta Clare Green (Loomis) earned a PhD in physics. The Green family moved to California when Arda was a girl. Arda Green earned undergraduate degrees in chemistry and philosophy at the University of California at Berkeley in 1921; she continued into graduate study of philosophy, but soon shifted her focus to medicine. She earned a medical degree at Johns Hopkins University in 1927.
Document 10: Margaret Mead: Margaret Mead, the first of five children, was born in Philadelphia, but raised in nearby Doylestown, Pennsylvania. Her father, Edward Sherwood Mead, was a professor of finance at the Wharton School of the University of Pennsylvania, and her mother, Emily (née Fogg) Mead, was a sociologist who studied Italian immigrants. Her sister Katharine (1906–1907) died at the age of nine months. This was a traumatic event for Mead, who had named the girl, and thoughts of her lost sister permeated her daydreams for many years. Her family moved frequently, so her early education was directed by her grandmother until, at age 11, she was enrolled by her family at Buckingham Friends School in Lahaska, Pennsylvania. Her family owned the Longland farm from 1912 to 1926. Born into a family of various religious outlooks, she searched for a form of religion that gave an expression of the faith that she had been formally acquainted with, Christianity. In doing so, she found the rituals of the Episcopal Church to fit the expression of religion she was seeking. Mead studied one year, 1919, at DePauw University, then transferred to Barnard College where she found anthropology mired in "the stupid underbrush of nineteenth century arguments."
Document 11: Arnold Genthe: Arnold Genthe was born in Berlin, Prussia, to Luise Zober and Hermann Genthe, a professor of Latin and Greek at the Graues Kloster (Grey Monastery) in Berlin. Genthe followed in his father's footsteps, becoming a classically trained scholar; he received a doctorate in philology in 1894 from the University of Jena, where he knew artist Adolf Menzel, his mother's cousin.
Document 12: Oak Hills, Pennsylvania: Oak Hills is a census-designated place (CDP) in Butler County, Pennsylvania, United States. The population was 2,333 at the 2010 census.
Document 13: Morgan Township, Butler County, Ohio: Morgan Township, one of thirteen townships in the county, is located in the southwestern corner of Butler County, Ohio, United States, on the state line with Indiana. It had a population of 5,515 at the 2010 census, up from 5,328 in 2000. There are no incorporated places in the township. Unincorporated places there include Alert, Okeana, Macedonia, and Shandon. It comprised one full survey township in the first range of the Congress Lands and has an area of .
Document 14: Punxsutawney Area School District: Punxsutawney Area School District is a midsized, rural/suburban public school district located in Jefferson County, Pennsylvania and Indiana County, Pennsylvania. Punxsutawney Area School District encompasses approximately . In Indiana County, Canoe, Banks, and North Mahoning Townships are part of district boundaries. Punxsutawney, Worthville, Big Run, and Timblin are Jefferson County boroughs that are served. The townships of Bell, Gaskill, Young, Perry, Porter, Ringgold, Olver, McCalmont, and Henderson are also part of the district. According to 2000 federal census data, it serves a resident population of 22,055 people. According to District officials, in school year 2007-08, Punxsutawney Area School District provided basic educational services to 2,589 pupils. Punxsutawney Area School District employed: 213 teachers, 203 full-time and part-time support personnel, and 14 administrators. Punxsutawney Area School District received more than $21.1 million in state funding in school year 2007-08.
Document 15: Galyani Vadhana: In 1942, Princess Galyani Vadhana continued her studies at the Faculty of Sciences in the field of chemistry at the University of Lausanne. She graduated with a bachelor of science degree in chemistry in 1948. While pursuing her science degree, she also studied social science and education for a Diplome de Sciences Sociales Pedagogiques, involving teacher education, literature, philosophy, and psychology.
ground_truth: Butler County
sub_queries: In what city was Arda Green born in? Answer: Prospect
Prospect >> located in the administrative territorial entity Answer: Butler County