Question: Philippe Hirschhorn was the teacher of which violinist and violist born on January 7, 1978?

Context paragraphs:
Andrea Een: Andrea Een (born January 22, 1947) is a violinist, violist, Hardanger fiddler, poet, and Professor Emerita of Music at St. Olaf College.

Susan Spain-Dunk: Susan Spain-Dunk is a violinist/violist and composer, born 22 February 1880 Folkestone, England - Died 1 January 1962 London.

Yuri Bashmet: Yuri Abramovich Bashmet (Russian: Юрий Абрамович Башмет ; born 24 January 1953) is a Russian conductor, violinist, and violist.

Robert Pikler: Robert Pikler OBE (24 January 190916 January 1984) was a Hungarian-Australian violinist, violist and teacher.

Philippe Hirschhorn: Philippe Hirschhorn (11 June 1946, Riga – 26 November 1996, Brussels) was a violinist.  He won the Queen Elisabeth Music Competition in 1967.  Born in Riga, Latvia, he first studied at Darsin music school in Riga with Prof. Waldemar Sturestep, later he studied with prof Michael Waiman at the Conservatoire of St. Petersburg (Then still called Leningrad).  He played concerts all over the world (Europe, America and Japan) with the most prestigious orchestras conducted by amongst others Herbert von Karajan, Uri Segal, Eugene Ormandy, Yury Temirkanov, Gennady Rozhdestvensky, Gary Bertini, Ronald Zollman.  He played together with Elisabeth Leonskaya, Martha Argerich, James Tocco, Alexandre Rabinovitch-Barakovsky, Frederic Meinders, Hans Mannes, Brigitte Engerer etc.  The rare recordings that exist of him playing are examples of his technical and musical abilities.  He was the teacher of many excellent violinists who dedicated their working life to performing and teaching, among others Philippe Graffin, David Grimal, Cornelia Angerhofer, Janine Jansen, Yoris Jarzynski, Marie-Pierre Vendôme and many others.

Janine Jansen: Janine Jansen ( ʒɑnine jɑnsən "or" ʒanine jɑnsən ; born 7 January 1978 in Soest in the Netherlands) is a violinist and violist.  She began to study the violin at age 6.  Her father and both her brothers are also musicians.  Her mother is a classical singer and is a sister of the bass Peter Kooy.  Jansen studied with Coosje Wijzenbeek, Philippe Hirschhorn, and Boris Belkin.  She is married to Swedish conductor Daniel Blendulf.

Maria Newman: Maria Newman (born Maria Louise Newman on January 18, 1962, in Los Angeles, California) is an award-winning American composer of classical music, and a critically acclaimed violinist, violist and pianist.  She is the youngest child of Alfred Newman, a major Hollywood film composer.  Maria holds the Louis and Annette Kaufman Composition Chair; and the Joachim Chassman Violin Chair at the Montgomery Arts House for Music and Architecture in Malibu, California, and is a founder of the Malibu Friends of Music.  Her library of original works represents a range of genres, from large-scale orchestral works, works for the ballet, chamber works, choral and vocal works, to new collaborative scores for vintage silent film.  She has been presented with many awards and commissions, including musical commendations from the United States Congress (2009), the California State Senate (2009), the California State Assembly (2009), the City of Malibu (2010), and the Annenberg Foundation (2011).

William Shield: William Shield (5 March 1748 – 25 January 1829) was an English composer, violinist and violist who was born in Swalwell near Gateshead, the son of William Shield and his wife, Mary, née Cash.

Louis Svećenski: Louis Svećenski (Croatian: "Ljudevit "Lujo" Svećenski" , born Ljudevit Kohn; November 7, 1862 – June 18, 1926) was notable Croatian - American violist - violinist and rector of the Boston Academy of Music.

Nils Mönkemeyer: Nils Mönkemeyer (born 1978) is a German violist and academic teacher.  He has recorded several CDs, of viola literature and arrangements for the viola, making it a respected solo instrument.  He has been awarded several international prizes.

Supporting paragraphs: Philippe Hirschhorn Janine Jansen
Answer: Janine Jansen