Question: What year was the ice hockey team who defeated the Nashville Predators in the 2017 Stanley Cup Finals established?

Context articles: Bob Johnson (ice hockey, born 1931)
2016–17 Pittsburgh Penguins season
1999 Stanley Cup Finals
1998 Stanley Cup Finals
Peter Laviolette
Patric Hörnqvist
2016–17 NHL season
1984 Stanley Cup Finals
2017 Stanley Cup Finals
2017 Stanley Cup playoffs

Robert Norman "Badger Bob" Johnson (March 4, 1931 – November 26, 1991) was an American college, international, and professional ice hockey coach.
 He coached the Wisconsin Badgers men's ice hockey team from 1966 to 1982, where he led the Badgers to seven appearances at the NCAA Men's Ice Hockey Championships, including three titles.
 During his time as the head coach at Wisconsin, Johnson also coached the United States men's national ice hockey team at the 1976 Winter Olympics and seven other major championships, including the Canada Cup and IIHF World Championships.
 He then coached the Calgary Flames for five seasons that included a Stanley Cup Finals loss in 1986.
 Johnson achieved the peak of his professional coaching career in his only season as coach of the Pittsburgh Penguins in 1990–91, when the Penguins won the 1991 Stanley Cup Finals, the first Stanley Cup in team history.
 In August 1991, following hospitalization due to a brain aneurysm, Johnson was diagnosed with brain cancer.
 He died on November 26 of the same year.
The 2016–17 Pittsburgh Penguins season was the 50th season for the National Hockey League ice hockey team that was established on June 5, 1967.
 The Penguins would win the Stanley Cup championship in back to back years, defeating the Nashville Predators in the 2017 Finals after winning the Stanley Cup in 2016.
The 1999 Stanley Cup Finals was the championship series of the National Hockey League's (NHL) 1998–1999 season, and the culmination of the 1999 Stanley Cup playoffs.
 It was contested by the Eastern Conference champion Buffalo Sabres and the Western Conference champion Dallas Stars.
 It was the 106th year of the Stanley Cup being contested.
 The Sabres were led by captain Michael Peca, coach Lindy Ruff and goalie Dominik Hasek.
 The Stars were led by captain Derian Hatcher, coach Ken Hitchcock and goalie Ed Belfour.
 It was the Sabres' second Stanley Cup Final appearance, the first being a loss to Philadelphia in 1975.
 It was the third appearance for the Stars' franchise, and their first since moving to Dallas from Minnesota in 1993.
 Minnesota (known at the time as the North Stars) lost in the Final to the NY Islanders in 1981 and to Pittsburgh in 1991.
 The Stars defeated the Sabres four games to two to win their first Stanley Cup, becoming the eighth post-1967 expansion team to earn a championship, and the first Southern team to win the Cup.
 This was the first time since 1994 that the Stanley Cup Finals did not end in a sweep.
The 1998 Stanley Cup Finals was the championship series of the National Hockey League's (NHL) 1997–1998 season, and the culmination of the 1998 Stanley Cup playoffs.
 It was contested by the Western Conference champion and defending Stanley Cup champion Detroit Red Wings and the Eastern Conference champion Washington Capitals.
 It was the 105th year of the Stanley Cup being contested.
 The series was the Capitals' first appearance in a Stanley Cup Final since the franchise's inception in 1974.
 The Red Wings won the series for the second year in a row, four games to none.
 It was the Wings' ninth Stanley Cup, and the most recent time when a Finals concluded with a sweep (as of 2017).
 This was also the last time until that a Stanley Cup Finals ended after an NBA Finals in the same season had concluded.
 Detroit coach Scotty Bowman won his eighth Stanley Cup in that capacity (having previously done so with the Montreal Canadiens in , , , , and , the Pittsburgh Penguins in , and the Wings the previous year), tying him with former Canadiens coach Toe Blake for the record of most Cups won by a coach (which he would break when he helped the Red Wings win the 2002 Cup).
Peter Philip Laviolette Jr. (born December 7, 1964) is an American professional ice hockey coach and former player.
 He is the current head coach for the Nashville Predators of the National Hockey League (NHL).
 He has previously held this position with the New York Islanders, Carolina Hurricanes, and Philadelphia Flyers.
 He coached the Hurricanes to a Stanley Cup win in 2006, and later coached the Philadelphia Flyers to the Stanley Cup Finals in 2010, and the Nashville Predators in 2017.
 Laviolette is the fourth coach in NHL history to lead three different teams to the Stanley Cup Finals.
 Despite this, he only played twelve NHL games himself, all with the New York Rangers.
Patric Gösta Hörnqvist (] ; born 1 January 1987) is a Swedish professional ice hockey player currently playing for the Pittsburgh Penguins in the National Hockey League.
 He has also played for the Nashville Predators.
 Hörnqvist won his first Stanley Cup when the Penguins defeated the San Jose Sharks in six games in the 2016 Stanley Cup Finals.
 In 2017, Hörnqvist scored the Cup-winning goal as the Penguins repeated as Stanley Cup champions.
The 2016–17 NHL season was the 100th season of operation (99th season of play) of the National Hockey League.
 Thirty teams were competing in an 82-game regular season from October 12, 2016, to April 9, 2017.
 The 2017 Stanley Cup playoffs began on April 12 and concluded on June 11, with the Pittsburgh Penguins winning the Stanley Cup over the Nashville Predators in 6 games.
 On June 11, the Pittsburgh Penguins became the first team to repeat as Stanley Cup champions since the Detroit Red Wings in 1997–98, winning their franchise's fifth Stanley Cup and their third in nine seasons.
The 1984 Stanley Cup Final was held between the Edmonton Oilers and the then-defending champion New York Islanders.
 The Islanders had swept the Oilers in four straight games to win the Cup.
 In 1984, the Islanders were seeking their fifth consecutive Stanley Cup championship, but the upstart Oilers would win the best-of-seven series four games to one to win their first Stanley Cup, becoming the third post-1967 expansion team and first former World Hockey Association team to win the Cup, and also the first team based west of Chicago to win the Cup since the WCHL's Victoria Cougars became the last non-NHL team to win it in .
 It was also the fifth straight Finals of teams that joined the NHL in 1967 or later and a rematch of the 1983 Finals—a Stanley Cup Finals rematch would not happen again until the Finals.
 s of 2017 , the Islanders' four consecutive Cup wins (, , , 1983) and their appearance in the 1984 Cup Finals is an NHL record of 19 consecutive playoff series wins that currently stands unbroken.
 This would be the second of eight consecutive Finals contested by a team from Alberta (the Oilers appeared in six, the Calgary Flames in two), and the first of five consecutive Finals to end with the Cup presentation on Alberta ice (the Oilers won four times, the Montreal Canadiens one).
The 2017 Stanley Cup Finals was the championship series of the National Hockey League's (NHL) 2016–17 season, and the culmination of the 2017 Stanley Cup playoffs.
 The Eastern Conference champion and defending Stanley Cup champion Pittsburgh Penguins defeated the Western Conference champion Nashville Predators, four games to two.
 Penguins captain Sidney Crosby was awarded the Conn Smythe Trophy as most valuable player of the playoffs for the second consecutive year.
The 2017 Stanley Cup playoffs of the National Hockey League (NHL) began on April 12, 2017 and concluded on June 11, 2017, with the Pittsburgh Penguins defeating the Nashville Predators four games to two in the 2017 Stanley Cup Finals.