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: 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?
Ecosystems.

Passage: William "Bill" Boss, a psychopathic prison warden, watches the end of The Human Centipede 2 (Full Sequence) with his accountant, Dwight Butler. Bill says that he hates the films as his feet are massaged by his secretary, Daisy. Daisy replies that she enjoyed them. In response, Bill sucks his finger and inserts it into Daisy's vagina, telling her that women should not be allowed to voice their opinions. Dwight interrupts, attempting to pitch a "brilliant idea" to fix the prison's horrible retention and violence rates, but he is interrupted by a phone call.
Bill and Dwight are then summoned to the scene of an assault within the prison. One of the officers has been stabbed by an inmate. As punishment, Bill decides to stomp on the arm of the prisoner, exposing the bone and causing immense pain. He promises to do it again when his bones are healed.
Back in the Warden's office, Bill receives a mysterious package. After Dwight asks what it contains, Bill reveals that it is a jar of specially imported, dried African clitorises which he eats "for strength." After eating a few, he receives a threatening prank phone call from one of the inmates. Bill waterboards him with three buckets of boiling water, horribly disfiguring him. The inmate tells Bill that he has lost his soul.
Governor Hughes arrives immediately afterwards, ordering Bill and Dwight to put a stop to the violence and promising that they will both be fired otherwise. In anger and retaliation, Bill orders a 'mass castration' of the inmates, and castrates one of the prisoners himself. He covers his face in the blood of the inmate and later eats the cooked testicles for lunch, calling it "Energy Food." Daisy is forced to perform fellatio on Bill while Dwight is in the room. Upon completing the act, Daisy eats one of the dried clitorises, mistaking them for candy.
Question: What is the last name of the person who is interrupted by a phone call?
Butler.

Passage: After Shackleton left with the James Caird, Frank Wild took command of the Elephant Island party, some of whom were in a low state, physically or mentally: Lewis Rickinson had suffered a suspected heart attack; Perce Blackborow was unable to walk, due to frostbitten feet; Hubert Hudson was depressed. The priority for the party was a permanent shelter against the rapidly approaching southern winter. On the suggestion of George Marston and Lionel Greenstreet, a hutnicknamed the "Snuggery"was improvised by upturning the two boats and placing them on low stone walls, to provide around five feet (1.5 m) of headroom. By means of canvas and other materials the structure was made into a crude but effective shelter.Wild initially estimated that they would have to wait one month for rescue, and refused to allow long-term stockpiling of seal and penguin meat because this, in his view, was defeatist. This policy led to sharp disagreements with Thomas Orde-Lees, who was not a popular man and whose presence apparently did little to improve the morale of his companions, unless it was by way of being the butt of their jokes.As the weeks extended well beyond his initial optimistic forecast, Wild established and maintained routines and activities to relieve the tedium. A permanent lookout was kept for the arrival of the rescue ship, cooking and housekeeping rotas were established, and there were hunting trips for seal and penguin. Concerts were held on Saturdays and anniversaries were celebrated, but there were growing feelings of despondency as time passed with no sign of the ship. The toes on Blackborow's left foot became gangrenous from frostbite and, on 15 June, had to be amputated by surgeons Alexander Macklin and James McIlroy in the candle-lit hut. Using the very last of the chloroform in their medical supplies, the whole procedure took 55 minutes and was a complete success.By 23 August, it seemed that Wild's no-stockpiling policy had failed. The surrounding sea was dense with pack ice that would halt any rescue ship, food supplies were running out and no penguins were coming ashore. Orde-Lees wrote: "We shall have to eat the one who dies first [...] there's many a true word said in jest". Wild's thoughts were now seriously turning to the possibility of a boat trip to Deception Islandhe planned to set out on 5 October, in the hoping of meeting a whaling ship when, on 30 August 1916, the ordeal ended suddenly with the appearance of Shackleton and Yelcho.
Question: What are the full names of the people who the used very last of the chloroform in their medical supplies?
Alexander Macklin.