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: In 1938 Egypt, a team of archaeologists discover the tomb of pharaoh Ahkmenrah, including a young Cecil Fredericks, finding the magical Tablet of Ahkmenrah. The locals warn the group that removing the tablet will end its magic. In present-day New York City, Larry Daley remains the night guard of the American Museum of Natural History. He, Theodore Roosevelt, Sacagawea, Attila the Hun, Jedediah, Octavius, Rexy the Tyrannosaurus rex skeleton and Dexter the capuchin monkey help re-open the Hayden Planetarium. A new wax Neanderthal resembling Larry named Laaa is introduced, identifying Larry as his father. Ahkmenrah shows Larry that the tablet is corroding, which later causes the exhibits to act erratically, causing mayhem at the planetarium's reopening. Afterwards, Larry catches his son Nick, who plans on taking a gap year to sort out his life, throwing a house party.
Larry reunites with Cecil, now in retirement, who realizes the end of the tablet's magic will cause the exhibits to become lifeless. Cecil explains that Ahkmenrah's parents, Merenkahre and Shepseheret, may be able to restore the tablet's power but that they are located in the British Museum. Larry convinces the museum's curator, Dr. McPhee, to let him ship Ahkmenrah to London to restore the tablet, convinced that McPhee knows its secrets. Larry and Nick travel to the British Museum, bypassing the night guard Tilly. To Larry's surprise, Roosevelt, Sacagawea, Attila, Jed, Octavius, Dexter and Laaa have come as well, and Laaa is left to stand guard while the others search the museum, the tablet bringing its own exhibits to life. 
Question: What is the last name of the person who is helped by the museum exhibits to re-open the planetarium?
Daley.

Passage: Katheryn Elizabeth Hudson (born October 25, 1984), known professionally as Katy Perry, is an American singer, songwriter, and television judge. After singing in church during her childhood, she pursued a career in gospel music as a teenager. Perry signed with Red Hill Records and released her debut studio album Katy Hudson under her birth name in 2001, which was commercially unsuccessful. She moved to Los Angeles the following year to venture into secular music after Red Hill ceased operations and she subsequently began working with producers Glen Ballard, Dr. Luke, and Max Martin. After adopting the stage name Katy Perry and being dropped by The Island Def Jam Music Group and Columbia Records, she signed a recording contract with Capitol Records in April 2007.
Perry rose to fame in 2008 with the release of her second album, a pop rock record titled One of the Boys, and its singles "I Kissed a Girl" and "Hot n Cold". The former track also sparked controversy for its sapphic themes. Her third album, Teenage Dream (2010), ventured into disco, and was her first album to top the U.S. Billboard 200. It topped the U.S. Billboard Hot 100 with the singles "California Gurls", "Teenage Dream", "Firework", "E.T.", and "Last Friday Night (T.G.I.F.)", while "The One That Got Away" reached number three on the chart. The album became the first by a female artist to produce five number-one songs in the U.S., and the second overall after Michael Jackson's album Bad. In March 2012, she re-issued the album as Teenage Dream: The Complete Confection, which produced the songs "Part of Me" and "Wide Awake". Her fourth album, Prism (2013), was her second to peak atop the U.S. charts. It is influenced by pop and dance, and she became the first artist with multiple videos to reach one billion views on Vevo with the videos for its songs "Roar" and "Dark Horse". Her fifth album, Witness (2017), delved into electropop and became her third album to reach number one in the U.S. "Chained to the Rhythm" was the album's most successful single, breaking Spotify's record at the time for most first-day streams for a song by a female artist.
Perry has received various awards, including four Guinness World Records, five American Music Awards, a Brit Award, and a Juno Award, and has been included in the annual Forbes lists of highest-earning women in music from 2011–2018. Her estimated net worth as of 2016 is $125 million. She is one of the best-selling music artists of all time, having sold more than 100 million records globally throughout her career. In film, she released an autobiographical documentary titled Katy Perry: Part of Me in 2012, and voiced Smurfette in the 2011 film The Smurfs and its sequel in 2013. Perry also began serving as a judge on American Idol in 2018. 
Question: What is the better-known last name of the person who signed a recording contract with Capitol Records in April 2007?
Perry.

Passage: Except for three months' formal schooling as a 12-year-old, during which he was bullied and ridiculed by his classmates, Percy was educated at home.  Rose, an autodidact with a dominating presence, supervised his music and literature studies and engaged other tutors for languages, art and drama. From his earliest lessons, Percy developed a lifelong fascination with Nordic culture; writing late in life, he said that the Icelandic Saga of Grettir the Strong was "the strongest single artistic influence on my life". As well as showing precocious musical talents, he displayed considerable early gifts as an artist, to the extent that his tutors thought his future might lie in art rather than music. At the age of 10 he began studying piano under Louis Pabst, a German immigrant then considered to be Melbourne's leading piano teacher. Grainger's first known composition, "A Birthday Gift to Mother", is dated 1893. Pabst arranged Grainger's first public concert appearances, at Melbourne's Masonic Hall in July and September 1894. The boy played works by Bach, Beethoven, Schumann and Scarlatti, and was warmly complimented in the Melbourne press.After Pabst returned to Europe in the autumn of 1894, Grainger's new piano tutor, Adelaide Burkitt, arranged for his appearances at a series of concerts in October 1894, at Melbourne's Royal Exhibition Building. The size of this enormous venue horrified the young pianist; nevertheless, his performance delighted the Melbourne critics, who dubbed him "the flaxen-haired phenomenon who plays like a master". This public acclaim helped Rose to decide that her son should continue his studies at  the Hoch Conservatory in Frankfurt, Germany, an institution recommended by William Laver, head of piano studies at Melbourne's Conservatorium of music. Financial assistance was secured through a fund-raising benefit concert in Melbourne and a final recital in Adelaide, after which mother and son left Australia for Europe on 29 May 1895. Although Grainger never returned permanently to Australia, he maintained considerable patriotic feelings for his native land, and was proud of his Australian heritage. 
Question: What is the first name of the person who said that the Icelandic Saga of Grettir the Strong was "the strongest single artistic influence on my life?"?

Percy.