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.

Input: Consider Input: Passage: James Barton Longacre (August 11, 1794 – January 1, 1869) was an American portraitist and engraver, and the fourth Chief Engraver of the United States Mint from 1844 until his death. Longacre is best known for designing the Indian Head cent, which entered commerce in 1859, and for the designs of the Shield nickel, Flying Eagle cent and other coins of the mid-19th century.
Longacre was born in Delaware County, Pennsylvania, in 1794. He ran away to Philadelphia at age 12, where he became an apprentice in a bookstore. His artistic talent developed and he was released to apprentice in an engraving firm.  He struck out on his own in 1819, making a name providing illustrations for popular biographical books. He portrayed the leading men of his day; support from some of them, such as South Carolina Senator John C. Calhoun, led to his appointment as chief engraver after the death of Christian Gobrecht in 1844.
In Longacre's first years as a chief engraver, the Philadelphia Mint was dominated by Mint Director Robert M. Patterson and Chief Coiner Franklin Peale. Conflict between Longacre and the two men developed after Congress ordered a new gold dollar and double eagle, with both to be designed by Longacre.  Peale and Patterson nearly had Longacre fired, but the chief engraver was able to convince Treasury Secretary William M. Meredith that he should be retained.  Both Patterson and Peale left the Mint in the early 1850s, ending the conflict.
In 1856, Longacre designed the Flying Eagle cent. When that design proved difficult to strike, Longacre was responsible for the replacement, the Indian Head cent, issued beginning in 1859. Other coins designed by Longacre include the silver and nickel three-cent pieces, the Shield nickel, the pattern Washington nickel, and the two-cent piece.  In 1866–1867, he redesigned the coins of Chile. Longacre died suddenly on New Year's Day 1869; he was succeeded by William Barber.  Longacre's coins are generally well-regarded today, although they have been criticized for lack of artistic advancement. 
Question: What is the last name of the person who was able to convince the Treasury Secretary that he should be retained?

Output: Longacre.


Input: Consider Input: Passage: Dr. Edwards arrives at a secluded island laboratory to examine Mr. Porter. Although Porter carries a deadly flesh-eating virus, he is asymptomatic and shows no signs of necrosis. Along with fellow researchers Camila and Bridget, Dr. Edwards spends two months examining Porter in isolation. Porter continually asks to see his wife, but he is continually denied.
Marcus prepares to marry wealthy heiress Kate Arias in the Dominican Republic. Mark's best friend Dobs, his brother Josh, and Josh's girlfriend Penny charter a boat and take Mark to a supposedly unpopulated island for a low key bachelor party.
Sympathetic researcher Camila creates a rapport with Porter. Frustrated with his confinement, Porter intentionally infects one of the researchers as he begins revolting against his continued isolation. Porter warns Camila that he is dangerous. Bridget becomes infected.
Josh and Penny go snorkeling and find dead sea animals littering the ocean floor. When they return to camp, Josh and Penny discover strange rashes on their skin. While Josh performs oral sex on her, Penny begins spitting up large amounts of blood and her flesh starts melting. Josh radios for help and a voice claiming to be Dr. Edwards provides him with instructions.
Realizing that they need help but are stranded, Mark and Dobs search the island and find a bunker. Inside, the two friends discover research related to the virus. They also find mutated men who attempt to kill them. Mark and Dobs are able to escape the human danger, but Dobs becomes infected.
The bunker turns out to be connected to Dr. Edwards' laboratory. Josh reunites with Mark and Dobs and they find the researchers. After formulating a plan for extraction, Bridget and Josh split off to gather Penny and wait for the boat on the beach. Dobs and Edwards also go on their own while Porter, Camila, and Marcus initiate the laboratory's self-destruct sequence. 
Question: Who discovers research related to a virus?

Output: Mark.


Input: Consider Input: Passage: In 1983, theater and opera director Peter Sellars proposed to American composer John Adams that he write an opera about Nixon's 1972 visit to China. Sellars was intrigued by Nixon's decision to make the visit, seeing it as both "a ridiculously cynical election ploy ... and a historical breakthrough". Adams, who had not previously attempted an opera, was initially skeptical, assuming that Sellars was proposing a satire. Sellars persisted, however, and Adams, who had interested himself in the origin of myths, came to believe the opera could show how mythic origins may be found in contemporary history.  Both men agreed that the opera would be heroic in nature, rather than poking fun at Nixon or Mao.  Sellars invited Alice Goodman to join the project as librettist,  and the three met at the Kennedy Center in Washington D.C. in 1985 to begin intensive study of the six characters, three American and three Chinese, upon whom the opera would focus. The trio endeavored to go beyond the stereotypes about figures such as Nixon and Chinese Chairman Mao Tse-tung and to examine their personalities.As Adams worked on the opera, he came to see Nixon, whom he had once intensely disliked, as an "interesting character", a complicated individual who sometimes showed emotion in public.  Adams wanted Mao to be "the Mao of the huge posters and Great Leap Forward; I cast him as a heldentenor".  Mao's wife, on the other hand, was to be "not just a shrieking coloratura, but also someone who in the opera's final act can reveal her private fantasies, her erotic desires, and even a certain tragic awareness.  Nixon himself is a sort of Simon Boccanegra, a self-doubting, lyrical, at times self-pitying melancholy baritone."Goodman explained her characterizations:
A writer tends to find her characters in her self, so I can tell you ... that Nixon, Pat, Mme. Mao, Kissinger and the chorus were all 'me.' And the inner lives of Mao and Chou En-Lai, who I couldn't find in myself at all, were drawn from a couple of close acquaintances. 
Question: What is the first name of the person who wanted Mao to be "the Mao of the huge posters and Great Leap Forward?"?


Output: John.