question: Were both Rudolph Polk and Simon West concert violinists?
answer: no
context: Title: Adam Rudolph
  Passage: Adam Rudolph (born September 12, 1955) is a composer, improviser, and percussionist actively involved in modern music.  For the past four decades Rudolph has performed extensively in concert throughout North & South America, Europe, Africa, and Asia.  Rudolph has been hailed as "a pioneer in world music" by the New York Times and "a master percussionist" by Musician Magazine.  He has released over 25 recordings under his own name, featuring his compositions and percussion work.  Rudolph composes for his ensembles Adam Rudolph's Moving Pictures, the Hu Vibrational percussion group, and Go: Organic Orchestra, an 18 to 54 piece ensemble for which he has developed an original music notation and conducting system.  He has taught and conducted hundreds of musicians worldwide utilizing the Go: Organic Orchestra concept.  In 1995 Rudolph premiered his opera "The Dreamer", based on the text of Friedreich Nietzche's "The Birth of Tragedy."
  Title: Simon West
  Passage: Simon West (born 1961) is an English film director and producer best known for directing blockbuster action films like "Con Air, ," and "The Expendables 2".
  Title: James K. Polk Ancestral Home
  Passage: The James K. Polk Ancestral Home, also known as James K. Polk Home State Historic Site, is a historic house museum at 301 West 7th Street in Columbia, Tennessee.  Built in 1816, it is the only surviving private residence of United States President James K. Polk.  It was designated a National Historic Landmark in 1961, and is listed on the National Register of Historic Places.  It is open daily except select holidays for guided tours.
  Title: Emerson String Quartet
  Passage: The Emerson String Quartet, also known as the Emerson Quartet, is a professional string ensemble – in residence at the Stony Brook University.  The musical ensemble was previously in residence at The Hartt School located in West Hartford, Connecticut.  Choosing American poet and philosopher Ralph Waldo Emerson as namesake, the quartet formed at the Juilliard School as a student ensemble.  They turned professional in 1976, with both of their violinists having studied under the tutelage of the renowned Oscar Shumsky, alternating as first and second violinists.  When it was formed, the Emerson Quartet was one of the first with the two violinists alternating chairs.
  Title: Antonio Bazzini
  Passage: Antonio Joseph Bazzini (11 March 181810 February 1897) was an Italian violinist, composer and teacher.  As a composer his most enduring work is his chamber music which has earned him a central place in the Italian instrumental renaissance of the 19th century.  However his success as a composer was overshadowed by his reputation as one of the finest concert violinists of the nineteenth century.  He also contributed to a portion of Messa per Rossini, specifically the first section of "II.  Sequentia", Dies Irae.
  Title: Iowa Highway 415
  Passage: Iowa Highway 415 is a short state highway that runs mostly north-to-south in central Iowa.  Iowa 415 begins at U.S. Route 6 in Des Moines and ends at Iowa Highway 141 east of Granger.  Prior to 2003, Iowa 415 extended north from Polk City and ended at Iowa Highway 17 south of Madrid.  Now, Iowa 415 turns west at Polk City and crosses the Des Moines River at Saylorville Lake prior to ending at Iowa 141.  Since the rerouting in 2003, the northern terminus for Iowa 415 is now farther south than its northernmost point in Polk City.
  Title: Georg Kulenkampff
  Passage: Alwin Georg Kulenkampff-Post (23 January 1898 – 4 October 1948) was a German virtuoso violinist.  One of the most popular German concert violinists of the 1930s and 1940s, he was considered one of the finest violinists of the 20th century.
  Title: List of female violinists
  Passage: This is a chronological list of female classical professional concert violinists.
  Title: Ellendale, Oregon
  Passage: Ellendale is a ghost town in Polk County, Oregon, United States, about two and a half miles west of Dallas.  It was the first White settlement in present-day Polk County.  The community's name changed over the years, with the first post office in Polk County being opened in this locality as "O'Neils Mills" in 1850.  The post office was renamed "Nesmiths" (Or "Nesmiths Mills") in 1850 and discontinued in 1852.  The community was eventually renamed Ellendale.
  Title: Rudolph Polk
  Passage: Rudolph ("Rudy") Polk (25 November 1892 New York, New York – 16 June 1957 Los Angeles) was an American concert violinist based in New York City during his early years and, during his later years, a Hollywood film director, film industry executive, and artist manager for Jascha Heifetz, Vladimir Horowitz, José Iturbi, and Gregor Piatigorsky.  In Hollywood, Polk was the assistant musical director to Morris Stoloff at Columbia Pictures.  After World War II, Polk was musical director for Enterprise Studios.
citations: Simon West Rudolph Polk