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.

Passage: Bush starred in the 1990 black comedy film Les Dogs, produced by The Comic Strip for BBC television. Bush plays the bride Angela at a wedding set in a post-apocalyptic Britain. In another Comic Strip Presents film, GLC, she produced and sang on the theme song "Ken". The song was written about Ken Livingstone, the leader of the Greater London Council and future mayor of London, who at the time was working with musicians to help the Labour Party garner the youth vote.Bush wrote and performed the song "The Magician", using a fairground-like arrangement, for Menahem Golan's 1979 film The Magician of Lublin. The track was scored and arranged by Michael Kamen. In 1986, she wrote and recorded "Be Kind to My Mistakes" for the Nicolas Roeg film Castaway. An edited version of this track was used as the B-side to her 1989 single "This Woman's Work". In 1988, the song "This Woman's Work" was featured in the John Hughes film She's Having a Baby, and a slightly remixed version appeared on Bush's album The Sensual World. The song has since appeared on television shows, and in 2005 reached number-eight on the UK download chart after featuring in a British television advertisement for the charity NSPCC.In 1999, Bush wrote and recorded a song for the Disney film Dinosaur, but the track was not included on the soundtrack. According to the winter 1999 issue of HomeGround, a Bush fanzine, it was scrapped when Disney asked her to rewrite the song and she refused. Also in 1999, Bush's song "The Sensual World" was featured prominently in Canadian filmmaker Atom Egoyan's film "Felicia's Journey".In 2007, Bush was asked to write a song for The Golden Compass soundtrack which made reference to the lead character, Lyra Belacqua. The song, "Lyra", was used in the closing credits of the film, reached number 187 in the UK Singles Chart and was nominated for the International Press Academy's Satellite Award for original song in a motion picture. According to Del Palmer, Bush was asked to compose the song on short notice and the project was completed in 10 days. 
Question: What is the last name of the person who wrote and recorded "Be Kind to My Mistakes" ?
Bush.

Passage: Drake ended his studies at Cambridge nine months before graduation, and in autumn 1969 moved to London. His father remembered "writing him long letters, pointing out the disadvantages of going away from Cambridge ... a degree was a safety net, if you manage to get a degree, at least you have something to fall back on; his reply to that was that a safety net was the one thing he did not want." Drake spent his first few months in London drifting from place to place, occasionally staying at his sister's Kensington flat but usually sleeping on friends’ sofas and floors. Eventually, in an attempt to bring some stability and a telephone into Drake's life, Boyd organised and paid for a ground floor bedsit in Belsize Park, Camden.
On 5 August 1969, Drake recorded five songs for the BBC's John Peel show ("Cello Song", "Three Hours", "River Man", "Time of No Reply" and an early version of "Bryter Layter"), three of which were broadcast on the following night. A month later, on 24 September, he opened for Fairport Convention at the Royal Festival Hall in London, followed by appearances at folk clubs in Birmingham and Hull. Folk singer Michael Chapman said of the performances:The folkies did not take to him; [they] wanted songs with choruses. They completely missed the point. He didn't say a word the entire evening. It was actually quite painful to watch. I don't know what the audience expected, I mean, they must have known they weren't going to get sea-shanties and sing-alongs at a Nick Drake gig!
The experience reinforced Drake's decision to retreat from live appearances; the few concerts he did play around this time were usually brief, awkward, and poorly attended. Drake seemed reluctant to perform and rarely addressed his audience. As many of his songs were played in different tunings, he frequently paused to retune between numbers. 
Question: Where did the man who did not like to play in front of live audiences end his studies?
Cambridge.

Passage: Arthur Harris is the grumpy husband of Marion, who is terminally ill yet continues to participate with enthusiasm at her local seniors' choir, The OAP'Z. The choirmaster is a young teacher, Elizabeth who is preparing the choir to enter a local musical choir competition called "Shadow Song". Arthur is also estranged from his son, James. Marion's health deteriorates over time until one night when she dies in her sleep. Arthur initially takes this loss severely and cuts himself from his family and the choir. Eventually he agrees to take Marion's place in the choir. The transition proves to be a challenge for Arthur thanks to the unconventional songbook that includes racier songs such as Salt-N-Pepa's "Let's Talk About Sex" and Motorhead's "Ace of Spades". However he grows to enjoy spending time in the choir.
On the eve of the competition, Arthur has an argument with James in a failed attempt to rebuild their relationship and pulls out of the choir. The choir participates in the competition without Arthur. He arrives later but before he can perform with the choir, they are eliminated from the competition by the judges. The choir are on their way to return home in defeat when Arthur stops the bus and storms the musical competition's stage shortly joined by the rest of the choir. They perform again with Arthur singing a solo of "Lullabye (Goodnight, My Angel)". The choir finishes in third place and returns home triumphant. Arthur and his son, James (who watched him perform in the competition) reconnect on the journey home with James leaving an answering phone message confirming this later. 
Question: Who is the estranged son's mother's choir teacher?

Elizabeth.