Question: Jack William Nicklaus (born January 21, 1940), nicknamed The Golden Bear, is an American retired professional golfer. He is widely regarded as the greatest golfer of all time, winning a record 18 career major championships, while producing 19 second-place and 9 third-place finishes, over a span of 25 years. Nicklaus focused on the major championships--Masters Tournament, U.S. Open, Open Championship and PGA Championship--and played a selective schedule of regular PGA Tour events, yet still finished with 73 victories, third on the all-time list behind Sam Snead (82) and Tiger Woods (79).

Between 1981 and 1985, Nicklaus accumulated seven more top-10 placements in major championships, including three runner-up performances. He won only twice on the PGA Tour during this period, the Colonial National Invitation in 1982 and his own Memorial Tournament in 1984 for the second time, defeating Andy Bean in a sudden-death playoff to become the tournament's first repeat champion.  In 1983, Nicklaus closed out the PGA Championship and World Series of Golf with brilliant final rounds in the mid-60's, and passed many players to move into contention, but finished runner-up in each to Player of the Year Hal Sutton and Nick Price, respectively, who dominated the tournaments from start to finish. Despite not winning a PGA Tour event in 1983, Nicklaus finished 10th on the PGA Tour money list, and passed a significant milestone by becoming the first player to eclipse the $4 million level in career earnings.  In 1985, Nicklaus finished second to Curtis Strange in the Canadian Open, which marked his seventh and final second-place finish in that tournament; this is a record for that event. These seven runner-up finishes came over the course of 21 events--or one second-place finish for every three tournaments played--and does not include a third-place finish in 1983, one shot out of the playoff between John Cook and Johnny Miller.  During the five-year period between 1981 and 1985, the Ryder Cup matches provided Nicklaus with two bright spots. He completed his competition as a player in style by contributing a perfect 4-0-0 record (inclusive of a 5 & 3 anchor singles match win over Eamonn Darcy) in 1981, and captained the United States team in 1983 to a one-point win over Europe.

Using a quote from the above article, answer the following question: What else can you tell me about what he did during this time?
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Answer: In 1985, Nicklaus finished second to Curtis Strange in the Canadian Open, which marked his seventh and final second-place finish in that tournament; this is a record for that event.

Problem: Opeth is a Swedish heavy metal band from Stockholm, formed in 1989. The group has been through several personnel changes, but lead vocalist, guitarist and songwriter Mikael Akerfeldt has remained Opeth's primary driving force throughout the years. Opeth has consistently incorporated progressive, folk, blues, classical and jazz influences into its usually lengthy compositions, as well as strong influences from death metal, especially in their early works. Many songs include acoustic guitar passages and strong dynamic shifts, as well as both death growls and clean vocals.

Opeth was formed as a death metal band in 1989 in Stockholm, Sweden, by lead vocalist David Isberg. Isberg asked former Eruption band member Mikael Akerfeldt (just 16 years old at the time) to join Opeth as a bassist. When Akerfeldt showed up to practice on the day after Isberg invited him, it became clear that Isberg had not told the band members, including the band's current bassist, that Akerfeldt would be joining. An ensuing argument led to all members but Isberg and Akerfeldt leaving to form a new project. The band name was derived from the word "Opet", taken from the Wilbur Smith novel The Sunbird. In this novel, Opet is the name of a fictional Phoenician city in South Africa translated as "City of the Moon".  Isberg and Akerfeldt recruited drummer Anders Nordin, bassist Nick Doring, and guitarist Andreas Dimeo. Unsatisfied with Opeth's slow progress, Doring and Dimeo left the band after their first performance, and were replaced by guitarist Kim Pettersson and bassist Johan De Farfalla. After the next show, De Farfalla left Opeth to spend time with his girlfriend in Germany, and was initially replaced by Mattias Ander, before Akerfeldt's friend Peter Lindgren took on the role of bassist. Rhythm guitarist Kim Pettersson left following the band's next performance, and Lindgren switched to guitar, with the role of bassist falling to Stefan Guteklint. The following year, David Isberg left the band citing "creative differences".  Following Isberg's departure, Akerfeldt took over vocal duties and he, Lindgren, and Nordin spent the next year writing and rehearsing new material. The group began to rely less on the blast beats and aggression typical of death metal, and incorporated acoustic guitars and guitar harmonies into their music; developing the core sound of Opeth. Bassist Guteklint was dismissed by the band after they signed their first record deal with Candlelight Records in 1994. Opeth initially employed former member De Farfalla as a session bassist for their demo recordings, and he went on to join on a full-time basis following the release of Opeth's debut album, "Orchid", in 1995.

Who was the lead member of Opeth?

Answer with quotes: lead vocalist David Isberg.

Problem: Rodney George Laver  (born 9 August 1938) is an Australian former tennis player widely regarded as one of the greatest in the history of the sport. He was the No. 1 ranked professional from 1964 to 1970, spanning four years before and three years after the start of the Open Era in 1968. He also was the No. 1 ranked amateur in 1961-62. Laver's 200 singles titles are the most in tennis history.

Laver had a long-running, friendly rivalry with Ken Rosewall between 1963, when he started out as a pro, and 1976, when both were semi-retired from the main tour. Including tournaments and one-night stands, they played over 130 matches, all of them as professionals, with some results from the barnstorming pro tours lost or badly recorded. Overall a match score of 79-63 in favour of Laver can be documented.  Against the older Pancho Gonzales, whom he played 1964 to 1970 on the pro tour, Laver had a lead of 35-19 or 38-21, depending on the source.  Laver had another, even longer rivalry with his fellow Queenslander Roy Emerson. They met first on the senior amateur tour in 1958 and dominated the amateur circuit until 1962, before Laver turned pro. When open tennis arrived in 1968, Emerson joined the pro tour, and had many new battles with Laver. Overall the score is 49-18 in favour of Laver, with 7-2 in major Grand Slam tournaments.  Laver had also many battles with Lew Hoad in his first years on the pro circuit 1963-1966. Although he lost the first 8 matches in January 1963, Laver later in the year began to turn around their rivalry, and until 1966, he had built a 38-21 lead. Against Arthur Ashe, Laver had a head-to-head lead of 21-3, winning all of the first 18 matches. Ashe's first win came in 1974, when Laver was 35. Another younger rival in the Open Era was John Newcombe, whom Laver led 16-5 in their head-to-head score.

Who did he play 130 matches against?

Answer with quotes:
all of them as professionals,