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.

Input: Consider Input: Passage: The name Spiderland originates from McMahan's younger brother, who thought that the record sounded "spidery". The album's black-and-white cover photograph, which depicts the members of the band (Brashear, McMahan, Walford and Pajo, from left to right) treading water in the lake of an abandoned quarry, was taken by Will Oldham. An article in The Stranger credited the cover for creating a mystique surrounding Slint, noting "[m]ost people only had seen Slint as four heads floating in a Kentucky quarry on Spiderland's cover. Listeners pondered the band's sparsely adorned black-and-white covers as if they were runes bearing secrets." Chris Gaerig of the Michigan Daily wrote, "the cover of Slint's masterful Spiderland captures the joyous fear and violence of the album so precisely it shakes souls. The group—submerged in a lake to their chins with deranged smiles—seems to be stalking you, hovering out of the black-and-white façade." Several other promotional images have been taken from the same photo session with Oldham.A photo of a spider taken by Noel Saltzman is used on the back cover, reflecting the album's title. The inside sleeve contains the message "interested female vocalists write 1864 douglas blvd. louisville, ky. 40205". McMahan confirmed that this message was serious, and said "We did get some responses and we did listen to CDs and tapes. We didn't end up doing anything immediately, so that idea of adding someone sort of fell by the wayside." The message "this recording is meant to be listened to on vinyl" is printed on some CD issues of Spiderland, demonstrating Slint's preference of analog audio devices. 
Question: What is the name of the band whose members are depicted on Spiderland's black-and-white cover photograph?

Output: Slint.


Input: Consider Input: 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?

Output: the Driftless Zone.


Input: Consider Input: Passage: Presley was a central figure in the development of rockabilly, according to music historians. "Rockabilly crystallized into a recognizable style in 1954 with Elvis Presley's first release, on the Sun label", writes Craig Morrison. Paul Friedlander describes the defining elements of rockabilly, which he similarly characterizes as "essentially ... an Elvis Presley construction": "the raw, emotive, and slurred vocal style and emphasis on rhythmic feeling [of] the blues with the string band and strummed rhythm guitar [of] country". In "That's All Right", the Presley trio's first record, Scotty Moore's guitar solo, "a combination of Merle Travis–style country finger-picking, double-stop slides from acoustic boogie, and blues-based bent-note, single-string work, is a microcosm of this fusion." While Katherine Charlton likewise calls Presley "rockabilly's originator", Carl Perkins has explicitly stated that "[Sam] Phillips, Elvis, and I didn't create rockabilly." and, according to Michael Campbell, "Bill Haley recorded the first big rockabilly hit." In Moore's view, too, "It had been there for quite a while, really. Carl Perkins was doing basically the same sort of thing up around Jackson, and I know for a fact Jerry Lee Lewis had been playing that kind of music ever since he was ten years old."At RCA, Presley's rock and roll sound grew distinct from rockabilly with group chorus vocals, more heavily amplified electric guitars and a tougher, more intense manner. While he was known for taking songs from various sources and giving them a rockabilly/rock and roll treatment, he also recorded songs in other genres from early in his career, from the pop standard "Blue Moon" at Sun to the country ballad "How's the World Treating You?" on his second LP to the blues of "Santa Claus Is Back in Town". In 1957, his first gospel record was released, the four-song EP Peace in the Valley. Certified as a million seller, it became the top-selling gospel EP in recording history. Presley would record gospel periodically for the rest of his life. 
Question: What is the first name of the person who Charlton called "rockabilly's originator?"?


Output: Elvis.