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 Q]: Passage: Minnesota has some of the earth's oldest rocks, gneisses that are about 3.6 billion years old (80% as old as the planet). About 2.7 billion years ago, basaltic lava poured out of cracks in the floor of the primordial ocean; the remains of this volcanic rock formed the Canadian Shield in northeast Minnesota. The roots of these volcanic mountains and the action of Precambrian seas formed the Iron Range of northern Minnesota. Following a period of volcanism 1.1 billion years ago, Minnesota's geological activity has been more subdued, with no volcanism or mountain formation, but with repeated incursions of the sea, which left behind multiple strata of sedimentary rock.In more recent times, massive ice sheets at least one kilometer thick ravaged the state's landscape and sculpted its terrain. The Wisconsin glaciation left 12,000 years ago. These glaciers covered all of Minnesota except the far southeast, an area characterized by steep hills and streams that cut into the bedrock. This area is known as the Driftless Zone for its absence of glacial drift. Much of the remainder of the state outside the northeast has 50 feet (15 m) or more of glacial till left behind as the last glaciers retreated. Gigantic Lake Agassiz formed in the northwest 13,000 years ago. Its bed created the fertile Red River valley, and its outflow, glacial River Warren, carved the valley of the Minnesota River and the Upper Mississippi downstream from Fort Snelling. Minnesota is geologically quiet today; it experiences earthquakes infrequently, and most of them are minor. 
Question: What is the name of the area in Minnesota was not covered by massive ice sheets?
[EX A]: the Driftless Zone.

[EX Q]: Passage: Despite the grandeur of Florence, Etty was severely depressed, writing to his brother on 5 October that "I feel so lonely, it is impossible for me to be happy" and complaining of "the vermin in the bed, the dirt and the filth" which he considered "such as no Englishman can have any idea of, who has not witnessed it". His emotional state made it impossible for him to study, and within a month of his arrival in Italy, he began the journey back to England, stopping in Paris on 26 October 1816. There he enrolled in the atelier of Jean-Baptiste Regnault but found the atmosphere rowdy and the studio too full of Frenchmen, and he left after a week. While in Paris he also attended the Académie des Beaux-Arts, and amassed a large quantity of prints from the art shops of Paris. Still homesick, Etty left Paris, returning to London in November.Notwithstanding his unhappiness, Etty appears to have developed as a painter during his travels. For the first time, his two paintings exhibited at the 1817 Summer Exhibition (Bacchanalians: a Sketch and Cupid and Euphrosyne) attracted a favourable review in the press, in this case from William Paulet Carey writing in the Literary Gazette who considered Bacchanalians "a fine classical invention" and Cupid as showing "splendid promise". Carey was later to take great pride in being the first critic to recognise Etty's potential, and continued to champion him throughout his career. In 1818 Etty entered a copy of Damiano Mazza's The Rape of Ganymede—at the time thought to be by Titian—in one of the Royal Academy's painting competitions. Easily the most accomplished entry in the competition, Etty was due to win until two of the other contestants complained that he had technically breached RA rules by briefly removing the painting from Academy premises to work on it at home; they further complained that Etty was technically a professional artist and thus ineligible for the contest despite his still being a student. Etty was disqualified from the competition, but the high quality of his work further raised his prestige within the Academy. Although his income was still low and he was surviving on gifts from his brother, at some point by 1818 Etty hired an assistant, George Henry Franklin. 
Question: Where did Etty enroll in the atelier of Jean-Baptiste Regnault?
[EX A]: Paris.

[EX Q]: Passage: Bush's son, Bertie, featured prominently in the 2014 concert Before the Dawn. She previously had a long-term relationship with bassist and engineer Del Palmer from the late 1970s to the early 1990s.Bush is a former resident of Eltham, southeast London. In the 1990s, she moved to a canalside residence in Sulhamstead, Berkshire, and moved to Devon in 2004. Bush is a vegetarian. Raised a Roman Catholic, she said in 1999:
...I would never say I was a strict follower of Roman Catholic belief, but a lot of [powerful, beautiful and passionate images are in there.] There's a lot of suffering in Roman Catholicism. I think I'm looking for not necessarily religion, but ways of helping myself to become more understanding, more complete, a happier person [...] But I really don't think I've found a niche.
The length of time between albums has led to rumours concerning Bush's health or appearance. In 2011, she told BBC Radio 4 that the amount of time between albums was stressful: "It's very frustrating the albums take as long as they do ... I wish there weren't such big gaps between them". In the same interview, she denied that she was a perfectionist, saying: "I think it's important that things are flawed ... That's what makes a piece of art interesting sometimes – the bit that's wrong or the mistake you've made that's led onto an idea you wouldn't have had otherwise." She reiterated her prioritisation of her family life.Bush's nephew, Raven Bush is violinist in the English indie band Syd Arthur.In 2016, Maclean's reported that Bush supported Theresa May, the Conservative Prime Minister of the United Kingdom. It quoted Bush as saying: "I actually really like her and think she’s wonderful. I think it’s the best thing that’s happened to us in a long time ... It is great to have a woman in charge of the country. She’s very sensible and I think that’s a good thing at this point in time." In 2019, Bush published a statement on her website saying she had been quoted out of context and did not support the Conservative Party. She wrote: "My response to the interviewer was not meant to be political but rather was in the defence of women in power ... I said that we had a woman in charge of our country, and that I felt it was a good thing to have women in power … it could make it seem like I am a Tory supporter which I want to make clear I am not.". 
Question: What is the last name of the person who said "It's very frustrating the albums take as long as they do?"?
[EX A]:
Bush.