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.

Passage: ABKCO Industries was formed in 1968 by Allen Klein as an umbrella company to ABKCO Records. Klein hired May Pang as a receptionist in 1969. Through involvement in a project with ABKCO, Lennon and Ono met her the following year. She became their personal assistant. In 1973, after she had been working with the couple for three years, Ono confided that she and Lennon were becoming estranged. She went on to suggest that Pang should begin a physical relationship with Lennon, telling her, "He likes you a lot." Astounded by Ono's proposition, Pang nevertheless agreed to become Lennon's companion. The pair soon left for Los Angeles, beginning an 18-month period he later called his "lost weekend". In Los Angeles, Pang encouraged Lennon to develop regular contact with Julian, whom he had not seen for two years. He also rekindled friendships with Starr, McCartney, Beatles roadie Mal Evans, and Harry Nilsson. While Lennon was drinking with Nilsson, he misunderstood something that Pang had said and attempted to strangle her. Lennon relented only after he was physically restrained by Nilsson.In June, Lennon and Pang returned to Manhattan in their newly rented penthouse apartment where they prepared a spare room for Julian when he visited them.  Lennon, who had been inhibited by Ono in this regard, began to reestablish contact with other relatives and friends.  By December, he and Pang were considering a house purchase, and he refused to accept Ono's telephone calls. In January 1975, he agreed to meet Ono, who claimed to have found a cure for smoking. After the meeting, he failed to return home or call Pang. When Pang telephoned the next day, Ono told her that Lennon was unavailable because he was exhausted after a hypnotherapy session. Two days later, Lennon reappeared at a joint dental appointment; he was stupefied and confused to such an extent that Pang believed he had been brainwashed. Lennon told Pang that his separation from Ono was now over, although Ono would allow him to continue seeing her as his mistress. 
Question: What is the name of the person who Pang believed had been brainwashed due to the extent of his stupefaction and confusion?
Lennon.

Passage: Tchaikovsky was born in 1840 in Votkinsk, a small town in present-day Udmurtia, formerly the Imperial Russian province of Vyatka. A precocious pupil, he began piano lessons at the age of five, and could read music as adeptly as his teacher within three years. However, his parents' passion for his musical talent soon cooled. In 1850, the family decided to send Tchaikovsky to the Imperial School of Jurisprudence in Saint Petersburg. This establishment mainly served the lesser nobility or gentry, and would prepare him for a career as a civil servant. As the minimum age for acceptance was 12, Tchaikovsky was sent by his family to board at the Imperial School of Jurisprudence's preparatory school in Saint Petersburg, 800 miles (1,300 km) from his family home in Alapayevsk. Once Tchaikovsky came of age for acceptance, he was transferred to the Imperial School of Jurisprudence to begin a seven-year course of studies.Music was not a priority at the School, but Tchaikovsky regularly attended the theater and the opera with other students. He was fond of works by Rossini, Bellini, Verdi and Mozart. Piano manufacturer Franz Becker made occasional visits to the School as a token music teacher. This was the only formal music instruction Tchaikovsky received there. From 1855 the composer's father, Ilya Tchaikovsky, funded private lessons with Rudolph Kündinger, a well-known piano teacher from Nuremberg, and questioned Kündinger about a musical career for his son. Kündinger replied that nothing suggested a potential composer or even a fine performer. Tchaikovsky was told to finish his course and then try for a post in the Ministry of Justice.Tchaikovsky graduated on May 25, 1859 with the rank of titular counselor, a low rung on the civil service ladder. On June 15, he was appointed to the Ministry of Justice in Saint Petersburg. Six months later he became a junior assistant and two months after that, a senior assistant. Tchaikovsky remained there for the rest of his three-year civil service career.In 1861, Tchaikovsky attended classes in music theory organized by the Russian Musical Society and taught by Nikolai Zaremba. A year later he followed Zaremba to the Saint Petersburg Conservatory. Tchaikovsky would not give up his Ministry post "until I am quite certain that I am destined to be a musician rather than a civil servant." From 1862 to 1865 he studied harmony, counterpoint and fugue with Zaremba, while Rubinstein taught him instrumentation and composition. In 1863 he abandoned his civil service career and studied music full-time, graduating in December 1865. 
Question: What is the name of the full name of the man that the titular counselor studied under starting in 1861?
Nikolai Zaremba.

Passage: With lessons learned from the Sanderson series, Longacre proposed to issue his own set of biographies illustrated with plates of the subjects.  He was on the point of launching this project, having invested $1,000 of his own money (equal to $25,097 today) in preparation, when he learned that James Herring of New York City was planning a similar series.  In October 1831, he wrote to Herring, and the two men agreed to work together on The American Portrait Gallery (later called the National Portrait Gallery of Distinguished Americans), published in four volumes between 1834 and 1839. Herring was an artist, but much of the work of illustrating fell to Longacre, who traveled widely in the United States to sketch subjects from life.  He again sketched Jackson, who was by now president, as well as former president James Madison, both in July 1833. He met many of the political leaders of the day, who were impressed by his portraits.  Among these advocates was the former vice president, South Carolina Senator John C. Calhoun. In July 1832, Niles' Register described a Longacre engraving, "one of the finest specimens of American advancement in the art".Longacre had married Eliza Stiles in 1827; between 1828, when their daughter Sarah was born, and 1840, they had three boys and two girls.  Sales of the Gallery lagged due to the Panic of 1837; Longacre was forced to declare bankruptcy and travel through the southern and midwestern states, peddling his books from town to town, with his wife and elder daughter managing shipping and finances at home.  Later in 1837, he was able to return to Philadelphia and open a banknote engraving firm with partners, Toppan, Draper, Longacre & Co.  With great demand for engraving for notes being issued by state banks, the firm prospered, and had offices at 60 Walnut Street in Philadelphia and a branch at 1 Wall Street in New York.  According to Snow, Longacre was known as the best engraver in the country. 
Question: What is the last name of the person who was able to return to Philadelphia and open a banknote engraving firm?

Longacre.