In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
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Question: Passage: Anne Beloff was born in 1921 in Hampstead to Simon Beloff and Marie Katzin. Her parents were of Russian–Jewish background, and her siblings included the historian Max Beloff, Baron Beloff, the psychologist John Beloff, the journalist Nora Beloff, and the politician Renee Soskin. She earned a degree in chemistry from University College London in 1942 before completing a PhD in the biochemistry of skin burns with Rudolph Peters at the University of Oxford. She visited Harvard Medical School in 1946 to perform research and returned to the UK in 1948. In the same year she married Ernst Boris Chain, a biochemist who had won the Nobel Prize in Physiology or Medicine in 1945, and moved with him to Rome.
 Link Information: Sir Rudolph Albert Peters MC MID FRS HFRSE FRCP LLD (13 April 1889 – 29 January 1982) Question: How old was the the person with whom Beloff completed a PHD  when he died?

Answer: Answer: 93


Question: Passage: In 2014, Ivanovic enjoyed a resurgence and attained a number of career-best achievements. She began the year by winning her first title in three years at the ASB Classic, defeating former world No. 1 Venus Williams in three sets before upsetting the reigning world No. 1 Serena Williams en route to her second Australian Open quarterfinal where she lost in three sets to thirtieth seed, Eugenie Bouchard. During the clay court season, Ivanovic reached her third final of the year at the Porsche Tennis Grand Prix, losing to two-time defending champion Maria Sharapova; the quarterfinals of the Mutua Madrid Open and the semi-finals of the Internazionali BNL d'Italia, defeating Sharapova for the first time since 2007 en route but was ultimately upset by Lucie Šafářová in the third round of the French Open. She rebounded by winning her first career singles title on grass at the Aegon Classic before reaching the final of the Western & Southern Open (her first top tier Premier final since 2009) and thus returned to the top ten of the WTA rankings for the first time in five years as a result. In September, Ivanovic reached her sixth singles final of the year (a new career-best) at the Toray Pan Pacific Open, where she defeated Caroline Wozniacki to claim her fourth title of the season, the most titles she won in a single season.
 Link Information: Venus Ebony Starr Williams (born June 17, 1980) Question: Which Williams sister is the oldest?

Answer: Answer: Venus Williams


Question: Passage: Desrosiers played with the Rimouski Océanic of the Quebec Major Junior Hockey League (QMJHL) from 2012 to 2015. Following his first full season with Rimouski Océanic he was awarded the Raymond Lagacé Trophy as the QMJHL Defensive Rookie of the Year and was also named to the 2012–13 QMJHL All-Rookie Team. On April 19, 2014, the Dallas Stars of the National Hockey League signed Desrosiers to three-year entry-level contract, but he was returned to the Rimouski Océanic for the 2014–15 QMJHL season where, in his final year of major junior hockey, he was recognized for his outstanding play when he posted the QMJHL Best GAA of 2.50 to win the Jacques Plante Memorial Trophy and was selected as the 2014–15 CHL Goaltender of the Year.
 Link Information: from 2012 to 2015 Question: How many years after Rimouski Oceanic was founded did Desrosiers join their roster?

Answer:
Answer: 43