In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

[EX Q]: Passage: It was in the 1991-92 season of TV's Murphy Brown starring Candice Bergen, Elder made a mark portraying Murphy Brown's obstetrician, Dr. Barton. Her recurring role culminated with the historic season finale where Dr. Barton delivered Murphy Brown's baby. She was cast as Gina's mother Nadine Water's on Martin (199297) starring Martin Lawrence. And in 1998 she replaced Jo Marie Payton as Harriette Winslow in the last several episodes of the popular show Family Matters. Elder has frequently returned to the stage and having last appeared at Arkansas Rep as Rose in August Wilson's Fences. She also has many theatre directorial credits including: The Book of the Crazy African (Skylight Theatre), The Meeting (Inner City Cultural Center, LA and New Federal Theatre, NY), Ceremonies in Dark Old Men (Beverly Canon Theatre), and A Private Act (Robey Theatre Company). Her direction of Matthew Lopez' The Whipping Man starring Charlie Robinson at the Skirball Cultural Center for LA Theatre Works radio series was broadcast nationally in 2016. Elder is an alumna of the American Film Institute's Directing Workshop for Women where she produced and directed the short film, Behind God's Back, based on an Alice Walker short story and starring Beau Bridges. She is also the recipient of a Screenwriting Fellowship with Walt Disney Studios. In 2005, Elder was honored with an NAACP Trailblazer Award. Elder is also a 2010 recipient of a Distinguished Alumni Award from Emerson College.
Link Information: And in 1998 she replaced Jo Marie Payton as Harriette Winslow in the last several episodes of the popular show Family Matters. Question: Which show that Elder has worked went on for a longer period of time, the show where she played Harriette Winslow or the show where she was cast as an obstetrician?
[EX A]: Answer: Murphy Brown

[EX Q]: Passage: Levette J. Davidson was a nationally acclaimed expert in folklore, especially that of Colorado and the West. He was born in Eureka, Illinois May 16, 1894, one of four children. Because his grand uncle was past-President of Eureka College, a Christian seminary, Davidson was reared in the school's shadow with the option of becoming either a teacher or a preacher. He chose teaching and was awarded his B.A. from Eureka in 1915. A year later he received his A.M. degree from the University of Illinois where he received Phi Beta Kappa honors. In 1917 he earned his M.A. in social science and history at Harvard University. __During World War I, he served with the Tenth Infantry of the Forty-Sixth Division and also served as an army sergeant in Intelligence. Davidson and his wife Mary, also a graduate of Eureka, were married in 1918. At the end of the war, Davidson simultaneously taught and studied at the University of Michigan where he earned a Ph.D. in languages and literatures in 1922. He arrived in Denver later that year and began teaching at the University of Denver. Before arriving in Colorado, his academic specialty was eighteenth century England. Once in Denver, he realized that Western literature and folklore would be his life work. Davidson taught at the University of Denver until his death in 1957. His course topics ranged from studies of Shakespeare and other English literature, to folklore in the West. He began teaching news writing and eventually founded the journalism department at the University as well as the board of publications and the press club. He was the first faculty member elected to serve as president of the University Senate. In 1940 he became head of the English Department and from March to August 1953 he served as interim Chancellor. At the time of assuming his post, he remarked: There is hardly an organization on campus that I have not been connected with at one time or another. Davidson was named University Lecturer for 1956. Davidson was a director of the Colorado State Historical Society, the Modern Languages Association, the American Folklore Society, and the American Dialect Society. He was a charter member of the Denver Posse of the Westerners, an organization devoted to western folklore. In spare moments, Davidson conducted research, wrote outlines for plays, and authored a large number of articles. He contributed to a wide range of magazines from Western American to Shakespeare Quarterly. Additionally, Davidson authored several books on folklore. The most widely recognized is Rocky Mountain Tales, which presents regional folklore as well as true accounts of early events in the area. Levette Davidson died May 14, 1957.
Link Information: Harvard University is a private Ivy League research university in Cambridge, Massachusetts Question: What state was the university Davidson got his M.A. from located in?
[EX A]: Answer: Massachusetts

[EX Q]: Passage: Cham Joof was born on 22 October 1924 at 7 Griffith Street (Half-Die) in Bathurst now Banjul, the capital of the Gambia. He came from a Serer and Wolof background. He was the third child and the eldest son of Ebrima Joof (18871949) and Aji Anna Samba (1896 9 April 1977). On his father's side (the Joof family), he was a descendant of the Joof Dynasty of Sine and Saloum, and the Njie Dynasty of Jolof. On his mother's side, he was the great grand-nephew of Tafsir Sa Lolly Jabou Samba a 19th-century Senegambian jihadist, military strategists and advisor to Maba Diakhou Ba and one of the commanders of his army. Cham Joof was the elder brother of Gambian barrister Alhaji Bai Modi Joof.
Link Information: none Question: Who was the head of the Gambia when Cham Joof was born?
[EX A]:
Answer: none