Question: Ronald Charles McKernan (September 8, 1945 - March 8, 1973), known as Pigpen, was an American singer and musician. He was a founding member of the San Francisco band the Grateful Dead and played in the group from 1965 to 1972. McKernan grew up heavily influenced by African-American music, particularly the blues, and enjoyed listening to his father's collection of records and taught himself how to play harmonica and piano. He began socializing around the San Francisco Bay Area, becoming friends with Jerry Garcia.

Along with Garcia and second guitarist Bob Weir, McKernan was a participant in the predecessor groups leading to the formation of the Grateful Dead, beginning with the Zodiacs and Mother McCree's Uptown Jug Champions. Drummer Bill Kreutzmann was added and the band evolved into the Warlocks. Around 1965, McKernan urged the rest of the Warlocks to switch to electric instruments. Bassist Phil Lesh joined soon after, and they became the Grateful Dead. The group were keen to involve McKernan in the band, as he was the group's original leader and was considered the best singer and frontman. The Dead's early sets centered around blues and R&B covers chosen by McKernan. By the end of 1966, Garcia had improved his musical skills and wanted to assert himself more as a leader and musical director, changing the band's direction and reducing McKernan's contributions. In 1967, drummer Mickey Hart joined the Grateful Dead, followed by classically trained keyboardist Tom Constanten in 1968, further changing the group's style. Constanten often replaced McKernan on keyboards in the studio, as McKernan found it difficult to adapt to the new material that Garcia and Lesh composed for the band. In October 1968, McKernan and Weir were nearly fired from the band after Garcia and Lesh believed their playing was holding the band back from lengthy and experimental jamming. Garcia delegated the task of firing them to Rock Scully, who said that McKernan "took it hard." Weir promised to improve, but McKernan was more stubborn. According to Garcia biographer Blair Jackson, McKernan missed three Dead shows before vowing not to "be lazy" any more and rejoining, while Kreutzmann objected to replacing McKernan and said the event never happened. Following his discharge from the United States Air Force in November 1968, Constanten officially joined the band, having only worked in the studio while on leave up to that point. Road manager Jon McIntire commented that "Pigpen was relegated to the congas at that point and it was really humiliating and he was really hurt, but he couldn't show it, couldn't talk about it." He began to take Hammond organ lessons and learned how to use the various drawbars and controls. After Constanten's departure in January 1970 over musical and lifestyle differences, McKernan nominally resumed keyboard duties. He contributed instrumentation to only two tracks (Hammond organ on "Black Peter" and harmonica on "Easy Wind", the latter as lead vocalist) on Workingman's Dead (1970), the band's breakthrough studio release. On the follow-up album American Beauty, keyboard parts were handled by Garcia and Lesh, along with session musicians Howard Wales and Ned Lagin. The 1971 live album Grateful Dead featured three overdubbed organ parts from Merl Saunders in addition to McKernan's contributions on "Big Railroad Blues", "The Other One", and "Me & Bobby McGee". While Garcia expressed frustration at McKernan's missed rehearsals and his inability to keep up with new material, Lesh was more forgiving, opining that "it was okay for Pigpen to lay out... we kept wanting Pigpen to be there because he was 'one of us.'"

Using a quote from the above article, answer the following question: what happened in 1966?
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Answer: the end of 1966, Garcia had improved his musical skills and wanted to assert himself more as a leader and musical director,

Question: Richard Hirschfeld Williams (May 7, 1929 - July 7, 2011) was an American left fielder, third baseman, manager, coach and front office consultant in Major League Baseball. Known especially as a hard-driving, sharp-tongued manager from 1967 to 1969 and from 1971 to 1988, he led teams to three American League pennants, one National League pennant, and two World Series triumphs. He is one of seven managers to win pennants in both major leagues, and joined Bill McKechnie in becoming only the second manager to lead three franchises to the Series. He and Lou Piniella are the only managers in history to lead four teams to seasons of 90 or more wins.

In 1977, he returned to Montreal as manager of the Expos, who had just come off 107 losses and a last-place finish in the NL East. Team president John McHale and general manager Jim Fanning had been impressed with Williams' efforts in Boston and Oakland, and thought he was what the Expos needed to finally become a winner. After cajoling the Expos into improved, but below .500, performances in his first two seasons, Williams turned the 1979-80 Expos into pennant contenders. The team won over 90 games both years--the first winning seasons in franchise history. The 1979 unit won 95 games, the most that the franchise would win in Montreal. However, they finished second each time to the eventual World Champion (the Pittsburgh Pirates in 1979 and the Philadelphia Phillies in 1980). Williams was never afraid to give young players a chance to play, and his Expos teams were flush with young talent, including All-Stars such as outfielder Andre Dawson and catcher Gary Carter. With a solid core of young players and a fruitful farm system, the Expos seemed a lock to contend for a long time to come. But Williams' hard edge alienated his players--especially his pitchers--and ultimately wore out his welcome. He labeled pitcher Steve Rogers a fraud with "king of the mountain syndrome" - meaning that Rogers had been a good pitcher on a bad team for so long that he was unable to "step up" when the team became good. Williams also lost confidence in closer Jeff Reardon, whom the Montreal front office had acquired in a much publicized trade with the Mets. When the 1981 Expos performed below expectations, Williams was fired during the pennant drive on September 7. With the arrival of his easy-going successor Jim Fanning, who restored Reardon to the closer's role, the inspired Expos made the playoffs for the only time in their 36-year history in Montreal. However, they fell in heartbreaking fashion to Rick Monday and the eventual World Champion Los Angeles Dodgers in a five-game NLCS.

Using a quote from the above article, answer the following question: what did he do as manager of the expos?
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Answer:
Williams turned the 1979-80 Expos into pennant contenders.