instruction:
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.
question:
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?
answer:
the Driftless Zone.


question:
Passage: From the colonizers' perspective, Carabane's position at the mouth of the river was an undeniable asset. In the 20th and 21st centuries, in terms of trade and tourism issues, this location is more of a disadvantage because it effectively separates the island from the rest of the country.
While a direct route by sea has not been available since the sinking of the Joola, the traveller from Dakar may use various other means of transportation in order to arrive in Basse Casamance. Some national roads connect to Ziguinchor, down the N1 to Kaolack. The N4 and N5 roads cross the Gambia (both the country and the river), the former running through Nioro du Rip to Farafenni, and the latter crossing the river to Banjul. The two roads merge in Bignona before descending to Ziguinchor. However, traffic is forbidden on both roads between 7 p.m. and 10 a.m., and the routes are subject to frequent accidents and constant demining operations. Alternatively, it is possible to travel by plane to the airport in Ziguinchor or Cap Skirring, or to travel by boat to one of these locations. Reaching Carabane from either town is relatively straightforward.By boat, the distance between Dakar and Carabane is 265 kilometres (143 nmi), although Ziguinchor is only 48 kilometres (30 mi) away. Before the launch of the Joola, other boats, mostly well-worn ones, made the connection: first Cap Skirring, then the Casamance Express, and then Island Karabane. In January 1991, a brand new ferry went into operation. Like its predecessors, it connected Dakar to Ziguinchor, stopping near Carabane where canoes could reach the island. On September 26, 2002, 180 extra passengers boarded the already overloaded ship at this stop, and a few hours later, the Joola sank. For security reasons, the Joola's successor, the Wilis, stopped calling at Carabane, to the great displeasure of the inhabitants. Tourists became rare after that, and from time to time, inhabitants of the island found it necessary to move to Dakar or Ziguinchor. Significant modifications to the MV Aline Sitoe Diatta, which replaced the Wilis in March 2008, were considered to allow it to stop safely at the island, and the construction of a berth was announced. Souleymane Ndéné Ndiaye, who later became Prime Minister of Senegal, laid the first stone of the berth in July 2008, and the entire construction project was financed by the Senegalese government at an estimated cost of 12 billion West African CFA francs. On April 26, 2014, the MV Aline Sitoe Diatta stopped at the Carabane berth for the first time, improving transportation for locals and tourists. As of 2015, the ferry stops at Carabane four times each week in the middle of its trips between Dakar and Ziguinchor. 
Question: What is the name of the ferry that, since 2015, stops at Carabane four times each week in the middle of its trips between Dakar and Ziguinchor?
answer:
MV Aline Sitoe Diatta.


question:
Passage: After the 1994 release of The Downward Spiral, the live band embarked on the Self-Destruct tour in support of the album. Chris Vrenna and James Woolley performed drums and keyboards respectively, Robin Finck replaced Richard Patrick on guitar and bassist Danny Lohner was added to the line-up. The stage set-up consisted of dirty curtains which would be pulled down for visuals shown during songs such as "Hurt". The back of the stage was littered with darker and standing lights, along with very little actual ones. The tour debuted the band's grungy and messy image in which they would come out in ragged clothes slathered in corn starch. The concerts were violent and chaotic, with band members often injuring themselves. They would frequently destroy their instruments at the end of concerts, attack each other, and stage-dive into the crowd.The tour included a set at Woodstock '94 broadcast on Pay-per-view and seen in as many as 24 million homes. The band being covered in mud was a result of pre-concert backstage play, contrary to the belief that it was an attention-grabbing ploy, thus making it difficult for Reznor to navigate the stage: Reznor pushed Lohner into the mud pit as the concert began and saw mud from his hair going into his eyes while performing. Nine Inch Nails was widely proclaimed to have "stolen the show" from its popular contemporaries, mostly classic rock bands, and its fan base expanded. The band received considerable mainstream success thereafter, performing with significantly higher production values and the addition of various theatrical visual elements. Its performance of "Happiness in Slavery" from the Woodstock concert earned the group a Grammy Award for Best Metal Performance in 1995. Entertainment Weekly commented about the band's Woodstock '94 performance: "Reznor unstrings rock to its horrifying, melodramatic core--an experience as draining as it is exhilarating". Despite this acclaim, Reznor attributed his dislike of the concert to its technical difficulties. 
Question: What band received a Grammy Award in 1995 for Best Metal Performance?
answer:

Nine Inch Nails.