In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Ex Input:
Passage: Opeth was formed as a death metal band in 1989 in Stockholm, Sweden, by lead vocalist David Isberg. Isberg asked former Eruption band member Mikael Åkerfeldt, who was just 16 years old at the time, to join Opeth as a bassist. When Åkerfeldt showed up to practice on the day after Isberg invited him, it became clear that Isberg had not told the band members, including the band's current bassist, that Åkerfeldt would be joining the band. An ensuing argument led to all members but Isberg and Åkerfeldt leaving to form a new project. The band name was derived from the word "Opet", taken from the Wilbur Smith novel The Sunbird. In this novel, Opet is the name of a fictional Phoenician city in South Africa translated as "City of the Moon".
Isberg and Åkerfeldt recruited drummer Anders Nordin, bassist Nick Döring, and guitarist Andreas Dimeo. Unsatisfied with Opeth's slow progress, Döring and Dimeo left the band after their first performance, and were replaced by guitarist Kim Pettersson and bassist Johan De Farfalla. After the next show, De Farfalla left Opeth to spend time with his girlfriend in Germany, and was initially replaced by Mattias Ander, before Åkerfeldt's friend Peter Lindgren took on the role of bassist. Rhythm guitarist Kim Pettersson left following the band's next performance, and Lindgren switched to guitar, with the role of bassist falling to Stefan Guteklint. The following year, David Isberg left the band citing "creative differences".Following Isberg's departure, Åkerfeldt took over vocal duties and he, Lindgren, and Nordin spent the next year writing and rehearsing new material. The group began to rely less on the blast beats and aggression typical of death metal, and incorporated acoustic guitars and guitar harmonies into their music; developing the core sound of Opeth. Bassist Guteklint was dismissed by the band after they signed their first record deal with Candlelight Records in 1994. Opeth initially employed former member De Farfalla as a session bassist for their demo recordings, and he went on to join on a full-time basis following the release of Opeth's debut album, "Orchid", in 1995.

Ex Output:
What is the last name of the bassist who replaced the band member that was dismissed in 1994?


Ex Input:
Passage: At 53°27′46″N 2°25′54″W (53.4629, -2.4316), Chat Moss lies at the southern edge of the Lancashire Plain, an area of Bunter sandstones overlaid with marls laid down during the Late Triassic period. Those rocks are themselves overlaid by a layer of boulder clay deposited during the last ice age, about 10,000 years ago. The combination of the flat topography and the underlying clay resulted in extensive peat bogs developing along the Mersey Valley, and overflowing beyond the valley. The bogs in the area between the River Glaze in the west, and Worsley and Eccles in the east, to the north of what was the River Irwell – now the Manchester Ship Canal – are known collectively as Chat Moss.
Chat Moss is a lowland raised bog. In areas where drainage is poor, water-logging can slow down plant decomposition, producing peat, which over the years can raise the level of the bog above that of the surrounding land. The moss occupies an area of about 10.6 square miles (27.5 km2), and is about 5 miles (8 km) long, about 2.5 miles (4.0 km) across at its widest point, lying 75 feet (23 m) above sea level. Chat Moss lies mainly in Salford, but extends into Wigan. By the 1990s, an estimated 72 per cent of the bog had been reclaimed, most of it for agriculture. About 230 acres (93 ha) of degraded bog remain, with 766 acres (310 ha) of undamaged peat deposits in four former peat extraction sites. The peat varies in depth between 24 feet (7 m) and 30 feet (9 m).The main bog mosses found in the peat of Chat Moss are Sphagnum cuspidatum, S. imbricatum, and S. acutifolia. The peat up to about 7 feet (2 m) from the surface is mainly humidified S. acutifolia, with fresher S. imbricatum peat nearer the surface.A 228-acre (92 ha) area of Chat Moss, to the north of the Liverpool–Manchester railway line, notified as Astley & Bedford Mosses, was designated a Site of Special Scientific Interest in 1989. Astley & Bedford Mosses, along with Risley Moss and Holcroft Moss, is also a European Union designated Special Area of Conservation, known as Manchester Mosses.The major habitats in the moss are bog, heathland, woodland and acidic grassland, subject to varying degrees of wetness depending on the local drainage. The remaining areas of bog are dominated by common cottongrass Eriophorum angustifolium and.

Ex Output:
What are the major habitats of the location that lies at the southern edge of Lancashire Plain?


Ex Input:
Passage: Simon is a decent fellow, married to a lovely woman Pam, living comfortably with two children. He has grown tired of the lack of sex and is attracted to a cellist friend of his wife, Katrien. 
Katrien travels to New Zealand to follow her husband Klaus in an attempt to rekindle their marriage. However, she catches him in bed with a young arts student and so their marriage collapses. Katrien, now available and lonely from the breakdown of her marriage, is susceptible to Simon's attraction.The two become fascinated with each other, but don't immediately start an affair. She doesn't want to destroy his greatest appeal, which is that he is upright and reliable. They eventually attempt some meetings, but something always goes wrong. Either he arrives late and the children are coming, or he ejaculates prematurely. 
Opportunity comes when they discover that they are both going to be in Germany the same week. Simon books a hotel room in Berlin, where he and his boss are attending a convention. Katrien comes to his room, but before they manage to have sex, his wife surprises him by showing up. Katrien escapes to an adjacent room through an interconnecting door and Simon and his wife make violent love, which Katrien hears through the wall. She gets upset because they were just about to have sex and he is having sex with his wife. 
Pam sees Simon sneak into the hallway during a speech and hears Katrien's voice on the other end of his phone, figures out what they are doing, and flies back to Wellington angry. She soon asks for a separation.

Ex Output:
What is the name of the person Katrien is friends with?