Complex sentence: Potter, "The Cambridge Companion to the String Quartet", p.44 In 1872, he married pianist Sophie Menter, a pupil of Franz Liszt who later joined the staff at the St. Petersburg Conservatory.
Split into simpler sentences: Potter, "The Cambridge Companion to the String Quartet", p.44 In 1872, he married pianist Sophie Menter, a pupil of Liszt. She later joined the staff at the St. Petersburg Conservatory.