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.
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Question: Passage: Following the Seven Years' War (1756–63) and the forced migration of Native American tribes westward, German, Scots-Irish, and other European immigrants settled in the central Susquehanna Valley, including in the area that would become Northumberland, Pennsylvania. Northumberland was laid out around a central village green in 1772, on land originally purchased from the Iroquois by the Province of Pennsylvania in 1768, as part of the first Treaty of Fort Stanwix. During the American Revolution, the village was evacuated as part of the Big Runaway in 1778, and only finally resettled in 1784. In 1794, when the Priestleys moved there, it included Quaker and Wesleyan meeting houses, a brewery, two potteries, a potash manufacturer, a clock maker, a printer (who issued a weekly newspaper), several stores, and approximately one hundred houses.
The Priestley property, purchased in 1794 at a total cost of £500 (£ 56,400 in 2019) from Reuben Haines, who had secured the patent to the land for Northumberland, comprised four lots of the original village plan (numbers 29–32). Currently, the house and grounds occupy 1 acre (4,000 m²) at 472 Priestley Avenue. (The address of the house was originally "North Way", but the street was later renamed in honor of Joseph Priestley.) This street forms the northwest boundary of the property; the other boundaries are Hanover Avenue to the northeast, Wallis Street to the southwest, and the North Shore Railroad to the southeast. Beyond the railroad line is a baseball field, and beyond that lies the Susquehanna River, which was the original southeastern boundary of the property. The confluence of the West Branch Susquehanna River with the main (or North) branch of the Susquehanna is a short distance southwest of the property, which is at an elevation of 456 feet (139 m).The property's original area was 2 acres (8,000 m²), but this was reduced by about half around 1830 when the Pennsylvania Canal (North Branch Division) was dug through the house's front yard, between the house and river. On May 31, 1860, the Lackawanna and Bloomsburg Railroad opened with a train from Danville. This was the second railroad track in Northumberland, and ran behind the house. The canal closed in 1902 and was later filled in. The modern railroad line approximates the canal's course through the front yard; the track behind the house no longer exists. 
Question: What was reduced from 2 acres to 1 when the Pennsylvania Canal was dug?

Answer: The Priestley property.


Question: Passage: Bob Weston works for STOP, a scandal magazine whose owner and staff are proud of being regarded as the filthiest rag in America. One of Bob's colleagues has just written an article about Dr. Helen Gurley Brown, a young psychologist and author of the best-selling book Sex and the Single Girl, a self-help guide with advice to single women on how to deal with men. The article raises doubts on her experience with sex and relationships. Helen is very offended, having lost six appointments with patients due to the article discrediting her as a "23 year-old virgin.". Bob wants to follow up by interviewing her, but she refuses.
Bob's friend and neighbor, stocking manufacturer Frank Broderick, is having marriage issues with his strong-willed wife Sylvia, but can't find the time to go to a counselor. Therefore, Bob decides to impersonate Frank and go to Helen as a patient, with the goal of getting close to her in order to gather more information. In exchange, he'll report back to Frank her advice. During their first couple of sessions, Bob acts shy and smitten, and tries to gently seduce Helen. She seems to respond to Bob's courteous advances, all while insisting it's a transfer and that she'll play the role of Sylvia to the benefit of his therapy. After he fakes a suicide attempt, the two of them end up making out in her apartment, with Bob realizing he's actually falling for Helen, which is the reason he still has not written anything about her, prompting an ultimatum from his boss. 
Question: What is the last name of the person Helen pretends to be in therapy sessions?

Answer: Broderick.


Question: Passage: From 1837, Alkan lived in the Square d'Orléans in Paris, which was inhabited by numerous celebrities of the time including Marie Taglioni, Alexandre Dumas, George Sand, and Chopin. Chopin and Alkan were personal friends and often discussed musical topics, including a work on musical theory that Chopin proposed to write. By 1838, at 25 years old, Alkan had reached a peak of his career. He frequently gave recitals, his more mature works had begun to be published, and he often appeared in concerts with Liszt and Chopin. On 23 April 1837 Alkan took part in Liszt's farewell concert in Paris, together with the 14-year-old César Franck and the virtuoso Johann Peter Pixis. On 3 March 1838, at a concert at the piano-maker Pape, Alkan played with Chopin, Zimmerman, and Chopin's pupil Adolphe Gutmann in a performance of Alkan's transcription, now lost, of two movements of Beethoven's Seventh Symphony for two pianos, eight hands.At this point, for a period which coincided with the birth and childhood of his natural son, Élie-Miriam Delaborde (1839–1913), Alkan withdrew into private study and composition for six years, returning to the concert platform only in 1844.  Alkan neither asserted nor denied his paternity of Delaborde, which, however, his contemporaries seemed to assume. Marmontel wrote cryptically in a biography of Delaborde that "[his] birth is a page from a novel in the life of a great artist". Alkan gave early piano lessons to Delaborde, who was to follow his natural father as a keyboard virtuoso.Alkan's return to the concert platform in 1844 was greeted with enthusiasm by critics, who noted the "admirable perfection" of his technique, and lauded him as "a model of science and inspiration", a "sensation" and an "explosion". They also commented on the attending celebrities including Liszt, Chopin, Sand and Dumas. In the same year he published his piano étude Le chemin de fer, which critics, following Ronald Smith, believe to be the first representation in music of a steam engine. Between 1844 and 1848 Alkan produced a series of virtuoso pieces, the 25 Préludes Op. 31 for piano or organ, and the sonata Op. 33 Les quatre âges. Following an Alkan recital in 1848, the composer Giacomo Meyerbeer was so impressed that he invited the pianist, whom he considered "a most remarkable artist", to prepare the piano arrangement of the overture to his forthcoming opera, Le prophète. Meyerbeer heard and approved Alkan's arrangement of the overture for four hands (which Alkan played with his brother Napoléon) in 1849; published in 1850, it is the only record of the overture, which was scrapped during rehearsals at the Opéra. 
Question: What is the last name of the composer who invited the man that played with Chopin to prepare a piano arrangement in 1848?

Answer:
Meyerbeer.