Premise: Paul Beard (4 August 1901 – 22 April 1989) was an English violinist, known particularly as leader of Sir Thomas Beecham's original London Philharmonic Orchestra and Sir Adrian Boult's BBC Symphony Orchestra. He was also a teacher, holding posts at the Royal Academy of Music and the Guildhall School of Music.
Hypothesis: While a leader of the London Philharmonic Orchestra, Paul Beard never taught others.