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: Soon after the end of World War II a young English woman, Amy Atkins, goes back to the London flat where she and her best friend, Tillie Grey, once used to live. The housekeeper Mrs. Tubbs meets Amy and reveals to her that Tillie went ill right before she was off to America to look for the man she married during the war. Tillie died from her illness before she could make her journey, and left two orphaned twin children, Joyce and Johnny Jr. To honor her old friend and make her husband honour his obligations Amy decides to make the journey that Tillie had planned and complete task of finding her husband, Johnny. Amy modifies Tillie's new passport and travels to America by boat on the ticket Tillie had bought, posing as her best friend.
The only information Amy has about her best friend's husband is that his name is John "Johnny" Grey, and that he is supposed to reside in Rochester, NY. To get more information of the whereabouts of Johnny, she asks aid from the American Red Cross. Just when Amy is about to land at the docks in New York City, a man named John Grey - a New York architect living in Rochester - gets a telegram informing him of the arrival of his wife and children by boat. This John Grey (Franchot Tone is shocked, since he is about to marry the socialité daughter, Lois (Frances Rafferty, of his boss Mr. Evans of his architectural firm that same weekend. Thinking it may by chance be a man with the same name Johnny contacts all the "John Grey"s of Rochester to find out that none were married in England. 
Question: What is the last name of the socialite Louis' father?

Answer: Evans.


Question: Passage: The geography and ecology of the Everglades involve the complex elements affecting the natural environment throughout the southern region of the U.S. state of Florida. Before drainage, the Everglades were an interwoven mesh of marshes and prairies covering 4,000 square miles (10,000 km2). The Everglades is simultaneously a vast watershed that has historically extended from Lake Okeechobee 100 miles (160 km) south to Florida Bay (around one-third of the southern Florida peninsula), and many interconnected ecosystems within a geographic boundary. It is such a unique meeting of water, land, and climate that the use of either singular or plural to refer to the Everglades is appropriate. When Marjory Stoneman Douglas wrote her definitive description of the region in 1947, she used the metaphor "River of Grass" to explain the blending of water and plant life.
Although sawgrass and sloughs are the enduring geographical icons of the Everglades, other ecosystems are just as vital, and the borders marking them are subtle or nonexistent. Pinelands and tropical hardwood hammocks are located throughout the sloughs; the trees, rooted in soil inches above the peat, marl, or water, support a variety of wildlife. The oldest and tallest trees are cypresses, whose roots are specially adapted to grow underwater for months at a time. The Big Cypress Swamp is well known for its 500-year-old cypresses, though cypress domes can appear throughout the Everglades. As the fresh water from Lake Okeechobee makes its way to Florida Bay, it meets salt water from the Gulf of Mexico; mangrove forests grow in this transitional zone, providing nursery and nesting conditions for many species of birds, fish, and invertebrates. The marine environment of Florida Bay is also considered part of the Everglades because its sea grasses and aquatic life are attracted to the constant discharge of fresh water.
These ecological systems are always changing due to environmental factors. Geographic features such as the Western Flatwoods, Eastern Flatwoods, and the Atlantic Coastal Ridge affect drainage patterns. Geologic elements, climate, and the frequency of storms and fire are formative processes for the Everglades. They help to sustain and transform the ecosystems in the Shark River Valley, Big Cypress Swamp, coastal areas and mangrove forests. Ecosystems have been described as both fragile and resilient. Minor fluctuations in water levels have far-reaching consequences for many plant and animal species, and the system cycles and pulses with each change. 
Question: What type of system does minor fluctuations in water levels have far-reaching consequences for?

Answer: Ecosystems.


Question: Passage: The college presents a symmetrical front to New Road and the castle mound, with four small gables between a larger gable at either end. There are two quadrangles, with steps leading down from the upper quadrangle (to the east) to the lower quadrangle (to the west). Residential accommodation for students and fellows is located in the lower quadrangle, whilst the hall, library, and administrative offices are in the upper quadrangle. The buildings are two storeys high, with dormers above. There are pools in the centre of the quadrangles (the one in the lower quadrangle is the longer of the two); the writer Simon Jenkins said that these are "almost puddles", and saw them as relics of Harrison's Mediterranean plan. The writer Peter Sager, however, thought that the pond represents the canal basin that previously occupied the site. The main entrance leads into the upper quadrangle, which has the hall on its east side. The square-mullioned windows facing the quadrangles are arranged in close-set groups of three; at the east end of the upper quadrangle, the common room has a larger bay window. An abstract sculpture by Hubert Dalwood, from 1962, has been positioned on the lawn inside the college. Dalwood also designed the fountain in the pool in the upper quadrangle, although his plan for a spray of water was not implemented, "leaving the sculpture with no obvious purpose".
The hall has a floor of black and white marble and arches made of concrete supporting an oak roof with red panels. The furniture in the hall was designed by, and the chairs were built by, Edward Barnsley. Lord Nuffield's coat of arms are displayed over the fireplace, carved from a single piece of stone, and his portrait, painted by Sir Arthur Cope, hangs in the hall. The chapel, on the south side of the college, can seat forty people. It has five abstract stained glass windows that were designed by John Piper and executed by Patrick Reyntiens, and a metal reredos with a bronze crucifix. The roofs are finished with Collyweston stone slates from Northamptonshire. Many other Oxford colleges are roofed with Stonesfield stone slate from a quarry 10 miles (16 km) northwest of Oxford, but these were no longer available when Nuffield was built. The main building stone used is Clipsham stone. The tower, which has nine floors, is about 90 feet (27 m) tall, with the flèche taking the total height to about 150 feet (46 m). It was the first tower built in Oxford for 200 years. Work was carried out in the library in 1999 to extend the total shelf-length to just under 6 kilometres (3.7 mi). The library contains paintings of "Spring" and "Winter" by Derrick Greaves and "Summer" and "Autumn" by Edward Middleditch. 
Question: What is the full name of the person whose portrait was painted by Sir Arthur Cope?

Answer:
Lord Nuffield.