Background: Patrick Michael Rafter (born 28 December 1972) is an Australian former professional tennis player. He reached the Association of Tennis Professionals (ATP) world No. 1 singles ranking on July 26, 1999. His career highlights include consecutive US Open titles in 1997 and 1998 and consecutive runner-up at Wimbledon in 2000 and 2001.
Context: 1998 was a particularly strong year for Rafter, who won the Canadian Open and Cincinnati in a row (only Andre Agassi, in 1995, Andy Roddick, in 2003, and Rafael Nadal, in 2013 also have won both these tournaments in the same year). Rafter defeated ninth ranked Richard Krajicek in the Toronto final and second ranked Pete Sampras in the Cincinnati final. When asked about the difference between himself and Rafter following their titles, Sampras stated "10 grand slams", and that a player has to come back and win a Grand Slam again in order to be considered great. Following his title at Cincinnati, Rafter won a US Open warm-up tournament in Long Island, New York. Entering the US Open as the defending champion, he reached the final again by defeating Hicham Arazi, Hernan Gumy, David Nainkin, Goran Ivanisevic and Jonas Bjorkman before defeating Sampras in a five-set semifinal. Rafter pointedly took issue with Sampras' refusal to show him respect in defeat: "That is what really upsets me about him", Rafter said, "and the reason why I try to piss him off as much as I can." Rafter then defended his U.S. Open title by defeating fellow Australian Mark Philippoussis in four sets, committing only five unforced errors throughout the match. When asked about Sampras' earlier comments about having to win another Grand Slam in order to be considered great, Rafter replied: "Maybe you can ask him that question, if he thinks that now. For me, I won another Slam, and it hasn't sunk in yet. It's very, very exciting for me, especially to repeat it". Altogether, Rafter won six tournaments in 1998, finishing the year #4 in the world.
Question: Did he win a masters title?
Answer: Altogether, Rafter won six tournaments in 1998, finishing the year #4 in the world.

Question:
Grace Brewster Murray Hopper (nee Murray; December 9, 1906 - January 1, 1992) was an American computer scientist and United States Navy rear admiral. One of the first programmers of the Harvard Mark I computer, she was a pioneer of computer programming who invented one of the first compiler related tools. She popularized the idea of machine-independent programming languages, which led to the development of COBOL, an early high-level programming language still in use today. Hopper had attempted to enlist in the Navy during World War II, but she was rejected by the military because she was 34 years of age and thus too old to enlist.
Following her retirement from the Navy, she was hired as a senior consultant to Digital Equipment Corporation (DEC). Hopper was initially offered the job position by Rita Yavinsky, but she insisted on applying for the position at DEC, and going through the typical formal interview process. She also sent a letter to Yavinsky's boss explaining that she would be available on alternating Thursdays, receiving a high salary, and have access to an unlimited expense account if she were to be exhibited at their museum of computing as a pioneer. After the proposal from Hopper, she was hired as a full-time senior consultant. As part of her position, she would report to Yavinsky. In this position, Hopper represented the company at industry forums, serving on various industry committees, along with other obligations. She retained that position until her death at age 85 in 1992. Hopper was a goodwill ambassador in her primary activity in this capacity. She lectured widely about the early days of computing, her career, and on efforts that computer vendors could take to make life easier for their users. She visited most of Digital's engineering facilities, where she generally received a standing ovation at the conclusion of her remarks. She often recounted that during her service she was frequently asked by admirals and generals why satellite communication would take so long. So during many of her lectures, she illustrated a nanosecond using salvaged obsolete Bell System 25 pair telephone cable, cut it to 11.8 inch (30 cm) lengths, the distance that light travels in one nanosecond, and handed out the individual wires to her listeners. Although no longer a serving officer, she always wore her Navy full dress uniform to these lectures, which is allowed by US Navy uniform regulations. The most important thing I've accomplished, other than building the compiler, is training young people. They come to me, you know, and say, 'Do you think we can do this?' I say, "Try it." And I back 'em up. They need that. I keep track of them as they get older and I stir 'em up at intervals so they don't forget to take chances.
Answer this question using a quote from the text above:

Did she do work with young people after retirement?

Answer:
I keep track of them as they get older and I stir 'em up at intervals so they don't forget to take chances.

Problem: Background: Jonas Edward Salk (; October 28, 1914 - June 23, 1995) was an American medical researcher and virologist. He discovered and developed one of the first successful polio vaccines. Born in New York City, he attended New York University School of Medicine, later choosing to do medical research instead of becoming a practicing physician. In 1939, after earning his medical degree, Salk began an internship as a physician scientist at Mount Sinai Hospital.
Context: In 1947, Salk became ambitious for his own lab and was granted one at the University of Pittsburgh, but the lab was smaller than he had hoped and he found the rules imposed by the university restrictive. In 1948, Harry Weaver, the director of research at the National Foundation for Infantile Paralysis, contacted Salk. He asked Salk to find out if there were more types of polio than the three then known, offering additional space, equipment and researchers. For the first year he gathered supplies and researchers including Julius Youngner, Byron Bennett, L. James Lewis, and secretary Lorraine Friedman joined Salk's team, as well. As time went on, Salk began securing grants from the Mellon family and was able to build a working virology laboratory. He later joined the National Foundation for Infantile Paralysis's polio project established by President Franklin D. Roosevelt. Extensive publicity and fear of polio led to much increased funding, $67 million by 1955, but research continued on dangerous live vaccines. Salk decided to use the safer 'killed' virus, instead of weakened forms of strains of polio viruses like the ones used contemporarily by Albert Sabin, who was developing an oral vaccine. After successful tests on laboratory animals, on July 2, 1952, assisted by the staff at the D.T. Watson Home for Crippled Children, Salk injected 43 children with his killed-virus vaccine. A few weeks later, Salk injected children at the Polk State School for the retarded and feeble-minded. In 1954 he tested the vaccine on about one million children, known as the polio pioneers. The vaccine was announced as safe on April 12, 1955. The project became large, involving 100 million contributors to the March of Dimes, and 7 million volunteers. The foundation allowed itself to go into debt to finance the final research required to develop the Salk vaccine. Salk worked incessantly for two and a half years. Salk's inactivated polio vaccine was the first vaccine for the disease; it came into use in 1955. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system.
Question: When did he start doing Polio research?
Answer:
In 1948, Harry Weaver, the director of research at the National Foundation for Infantile Paralysis, contacted Salk.