Detailed Instructions: In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.
See one example below:
Problem: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs. 
Question: Who believes Fagin's gang make wallets and handkerchiefs?
Solution: Oliver.
Explanation: In the sentence "He believes they make wallets and handkerchiefs", the pronoun "he" refers to name "Oliver".

Problem: Passage: Massenet was born at Montaud, then an outlying hamlet and now a part of the city of Saint-Étienne, in the Loire. He was the youngest of the four children of Alexis Massenet (1788–1863) and his second wife Eléonore-Adelaïde née Royer de Marancour (1809–1875); the elder children were Julie, Léon and Edmond. Massenet senior was a prosperous ironmonger; his wife was a talented amateur musician who gave Jules his first piano lessons. By early 1848 the family had moved to Paris, where they settled in a flat in Saint-Germain-des-Prés. Massenet was educated at the Lycée Saint-Louis and, from either 1851 or 1853, the Paris Conservatoire. According to his colourful but unreliable memoirs, Massenet auditioned in October 1851, when he was nine, before a judging panel comprising Daniel Auber, Fromental Halévy, Ambroise Thomas and Michele Carafa, and was admitted at once. His biographer Demar Irvine dates the audition and admission as January 1853. Both sources agree that Massenet continued his general education at the lycée in tandem with his musical studies.
Ambroise Thomas, my beloved master, came towards me and said, "Embrace Berlioz, you owe him a great deal for your prize." "The prize," I cried, bewildered, my face shining with joy. "I have the prize!!!" I was deeply moved and I embraced Berlioz, then my master, and finally Monsieur Auber. Monsieur Auber comforted me. Did I need comforting? Then he said to Berlioz pointing to me, "He'll go far, the young rascal, when he's had less experience!"
The prize brought a well-subsidised three-year period of study, two-thirds of which was spent at the French Academy in Rome, based at the Villa Medici. At that time the academy was dominated by painters rather than musicians; Massenet enjoyed his time there, and made lifelong friendships with, among others, the sculptor Alexandre Falguière and the painter Carolus-Duran, but the musical benefit he derived was largely self-taught. He absorbed the music at St Peter's, and closely studied the works of the great German masters, from Handel and Bach to contemporary composers. During his time in Rome, Massenet met Franz Liszt, at whose request he gave piano lessons to Louise-Constance "Ninon" de Gressy, the daughter of one of Liszt's rich patrons. Massenet and Ninon fell in love, but marriage was out of the question while he was a student with modest means. 
Question: What is the last name of the person that gave piano lessons to Louise-Constance "Ninon" de Gressy?
Solution:
Massenet.