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.

Ex Input:
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?

Ex Output:
The Priestley property.


Ex Input:
Passage: As Greeneville ascended to periscope depth, Waddle checked the sonar displays and the fire control station monitors, but reported later that he heard and saw nothing to suggest that the previously detected vessels in the area were now any closer to the submarine's position than had been reported before the submarine began the high speed maneuvers. Because the AVSDU was not working, Greeneville's executive officer, Lieutenant Commander Gerald K. Pfeifer, entered the sonar room and observed the contacts on the sonar screens.  Pfeifer then stood in the doorway between the sonar and control rooms, but did not communicate any updated sonar information to Waddle in the control room.  At 13:34, sonar gained a new contact, designated S-14.  Because Greeneville had not maintained a steady, slow course for a sufficient amount of time, the sonar data available to the Fire Control Technician of the Watch did not allow  accurate determination on Ehime Maru's range or course.  Also, due to time constraints placed by Waddle, the ship did not perform normal maneuvers which would be used to obtain accurate course and range information on the sonar contacts prior to proceeding to periscope depth.At 13:38, Greeneville reached periscope depth (about 60 feet (18 m) below the surface).  At this time, Ehime Maru was about 2,315 yards (2.117 km) or 1.14 nautical miles (2.1 km) away from the submarine and heading in her direction.  Although sonar data began to more accurately depict Ehime Maru's true range and bearing at this point, this was not evident to the sonar operators.  Lieutenant, Junior Grade Michael J. Coen, the officer of the deck, conducted an initial low  magnification periscope search of the area and sighted no nearby ships.  
Waddle then took the periscope before Coen could complete the normal high magnification search.  Since waves were washing over the periscope, Waddle ordered the submarine to go up another few feet to increase the distance the periscope can view.  Waddle then looked through the periscope at the area where he believed the reported surface contacts to be (possibly in error).  Although Ehime Maru was at this point heading toward Greeneville's location, Waddle failed to see the ship.  Regulations mandated that Waddle conduct a three-minute, 360-degree periscope scan before executing the emergency main ballast blow maneuver.  Waddle, however, aware that they were still behind schedule, conducted a short scan, searching primarily in the sector where he believed
the known contacts were located, noted that the haze was still present, and saw no ships in the vicinity.  At the end of his scan, Waddle announced to the control room crew, "I hold no visual contacts." Waddle later explained how he conducted his periscope search:. 
Question: What is the first name of the person who didn't finish the normal high magnification search before Waddle took the periscope?

Ex Output:
Michael.


Ex Input:
Passage: Sir William Turner Walton, OM (29 March 1902 – 8 March 1983) was an English composer. During a sixty-year career, he wrote music in several classical genres and styles, from film scores to opera. His best-known works include Façade, the cantata Belshazzar's Feast, the Viola Concerto, the First Symphony, and the British coronation anthems Crown Imperial and Orb and Sceptre.
Born in Oldham, Lancashire, the son of a musician, Walton was a chorister and then an undergraduate at Christ Church, Oxford. On leaving the university, he was taken up by the literary Sitwell siblings, who provided him with a home and a cultural education. His earliest work of note was a collaboration with Edith Sitwell, Façade, which at first brought him notoriety as a modernist, but later became a popular ballet score.
In middle age, Walton left Britain and set up home with his young wife Susana on the Italian island of Ischia. By this time, he had ceased to be regarded as a modernist, and some of his compositions of the 1950s were criticised as old-fashioned. His only full-length opera, Troilus and Cressida, was among the works to be so labelled and has made little impact in opera houses. In his last years, his works came back into critical fashion; his later compositions, dismissed by critics at the time of their premieres, were revalued and regarded alongside his earlier works.
Walton was a slow worker, painstakingly perfectionist, and his complete body of work across his long career is not large. His most popular compositions continue to be frequently performed in the 21st century, and by 2010 almost all his works had been released on CD. 
Question: What is the last name of the person whose earliest work of note was a collaboration with Edith?

Ex Output:

Walton.