Detailed Instructions: 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.
See one example below:
Problem: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs. 
Question: Who believes Fagin's gang make wallets and handkerchiefs?
Solution: Oliver.
Explanation: In the sentence "He believes they make wallets and handkerchiefs", the pronoun "he" refers to name "Oliver".

Problem: Passage: YouTube cover artist Mike Massé recorded a live acoustic version of "Paranoid Android" with Jeff Hall on 9/8/08 at the Pie Pizzeria in Salt Lake City, Utah.American metal band System of a Down additionally performed a cover of Paranoid Android at a Los Angeles live performance in 2000.Jazz pianist Brad Mehldau recorded a nine-minute cover of "Paranoid Android" on his album Largo (2002), featuring percussionists Jim Keltner and Matt Chamberlain, as well as a horn section. Additionally, Mehldau performed a 19-minute version of the song on Live in Tokyo (2004). Yet another solo version of 9 minutes appeared on the promotional album Deregulating Jazz (2000).The University of Massachusetts Amherst Minuteman Marching Band covered the song live in a version featuring xylophones, chimes, snare drums, cymbals, bass drum and timpani.Numerous Radiohead tribute albums include a version of "Paranoid Android", including Rockabye Baby! Lullaby Renditions of Radiohead and Plastic Mutations: The Electronic Tribute to Radiohead.
The reggae group Easy Star All-Stars covered OK Computer in its entirety for Radiodread (2006). Producer Michael G noted that "Paranoid Android" was particularly difficult to arrange for reggae, saying "There are songs like 'Paranoid Android', which flips between 4/4 time and 7/8 time about 13 times, and I also had to think about other ways to reinterpret those parts with horns, melodica, organ ... it was a great challenge."Sia Furler covered the song for the neo soul tribute Exit Music: Songs with Radio Heads (2006), and this version later appeared on The O.C. episode "The Chrismukk-huh?".
"Paranoid Android" has also been covered by classical musicians. Christopher O'Riley arranged "Paranoid Android" for a single piano and performed the song on Hold Me to This (2005).
Los Angeles string quartet The Section recorded the song for Strung Out on OK Computer: The String Quartet Tribute to Radiohead (2001); half of this quartet went on to form the Section Quartet, who performed "Paranoid Android" and the rest of OK Computer during two concerts in October 2006.Weezer covered "Paranoid Android" in both a live studio version released as a YouTube video and in concerts during their 2011 summer tour. Pitchfork's Tom Breihan called the Weezer cover "a fucking weird experience", and Jenny Eliscu of Rolling Stone criticised the song as "mainly boring" for not venturing far enough from Weezer's traditional sound.A piano cover was featured in an episode of the HBO television series Westworld in 2016. 
Question: What is the full name of the person who performed the song that was difficult to arrange for reggae on a single piano?
Solution:
Christopher O'Riley.