Question: In the 1977 European Cup Winners' Cup Final, what team played against the only team that has played in every season of the Bundesliga?

Context paragraphs:
1961 European Cup Winners' Cup Final: The 1961 European Cup Winners' Cup Final was a football match contested between Fiorentina of Italy and Rangers of Scotland.  It was the final of the 1960–61 European Cup Winners' Cup the first UEFA Cup Winners' Cup final.  It was the only time that the final was played over two legs.  The first leg was played at Ibrox Stadium, Glasgow and the second leg at the Stadio Comunale in Florence.  It was Rangers first European final and in doing so became the first British team to reach the final of a European football competition.  It was Fiorentina's second European final having previously reached the 1957 European Cup final.

1978 European Cup Winners' Cup Final: The 1978 European Cup Winners' Cup Final was a football match contested between Anderlecht of Belgium and Austria Vienna of Austria.  It was the final match of the European Cup Winners' Cup 1977–78 and the 18th European Cup Winners' Cup Final.  The final was held at Parc des Princes in Paris, France, on 3 May 1978 (the venue was decided in Bern by the UEFA Executive Committee on 20 September 1977).  Anderlecht won the match 4–0 thanks to two goals each by Rob Rensenbrink and Gilbert van Binst.

1977 European Cup Winners' Cup Final: The 1977 European Cup Winners' Cup Final was a football match contested between Hamburg of West Germany and the defending champions, Anderlecht of Belgium.  It was the final match of the 1976–77 European Cup Winners' Cup tournament and the 17th European Cup Winners' Cup Final in all.  The final was held at Olympisch Stadion in Amsterdam, Netherlands (the venue was decided in Bern by the UEFA Executive Committee on 17 September 1976).  Hamburg won the match 2–0 thanks to goals by Georg Volkert and Felix Magath.

1985 European Cup Winners' Cup Final: The 1985 European Cup Winners' Cup Final was a football match contested between Everton of England and Rapid Wien of Austria.  It was the final match of the 1984–85 European Cup Winners' Cup and the 25th European Cup Winners' Cup Final.  The final was held at Feijenoord Stadion in Rotterdam, Netherlands, on 15 May 1985.  Everton, which dominated throughout, won the match 3–1 thanks to goals by Andy Gray, Trevor Steven and Kevin Sheedy.  Everton were unable to defend the trophy: as league champions they would have entered the 1985–86 European Cup, but they were not permitted to play in either competition following the actions of rival Liverpool fans at the Heysel Stadium, which saw all English clubs banned from European competitions.

Rosenborg BK in European football: Rosenborg Ballklub is an association football club from Trondheim, Norway.  The team has participated in 32 seasons of Union of European Football Associations (UEFA) club competitions, including 21 seasons in the European Cup and Champions League, 16 seasons in the UEFA Cup and Europa League, one season in the Cup Winners' Cup and one season in the Intertoto Cup.  Rosenborg has played six times in the UEFA Cup after qualifying via the Champions League and once via the Intertoto Cup.  It has played 206 UEFA games, resulting in 81 wins, 39 draws and 86 defeats.  The club's first appearance was in the 1965–66 European Cup Winners' Cup, and it subsequently entered tournaments in six seasons until 1974–75.  The club's next appearance was in the 1986–87 European Cup, and then in the 1989–90 European Cup.  Since then, Rosenborg has been involved in a UEFA tournament every season except the 2006–07 season.  The club's best performance is reaching the quarter-finals of the 1996–97 Champions League, while their only European trophy came when they co-won the 2008 UEFA Intertoto Cup.

1983 European Cup Winners' Cup Final: The 1983 European Cup Winners' Cup Final was a football match contested between Aberdeen of Scotland and Real Madrid of Spain.  It was the final match of the 1982–83 European Cup Winners' Cup tournament and the 23rd European Cup Winners' Cup final, a football tournament contested by the winners of each qualifying nation's national cup.

1991 European Cup Winners' Cup Final: The 1991 European Cup Winners' Cup Final was a football match played between Manchester United and Barcelona on 15 May 1991 at Feijenoord Stadion, Rotterdam.  It was the final match of the European Cup Winners' Cup 1990–91 and the 31st European Cup Winners' Cup Final.  It came at the end of the first season of the reintroduction of English clubs into European competition after the ban following the Heysel disaster.

1963 European Cup Winners' Cup Final: The 1963 European Cup Winners' Cup Final was the final football match of the 1962–63 European Cup Winners' Cup and was the third European Cup Winners' Cup final.  It was contested between Tottenham Hotspur of England and the defending champions, Atlético Madrid of Spain, and was held at Feijenoord Stadion in Rotterdam, Netherlands.  Tottenham won the match 5–1 thanks to goals by Jimmy Greaves (2), John White and Terry Dyson (2).  Tottenham's victory made them the first British team to win a major European trophy.

1993 European Cup Winners' Cup Final: The 1993 European Cup Winners' Cup Final was a football match contested between Parma of Italy and Royal Antwerp of Belgium.  The final was held at Wembley Stadium in London, England on 12 May 1993.  It was the final match of the 1992–93 European Cup Winners' Cup and the 33rd European Cup Winners' Cup Final.  Parma beat Antwerp 3–1 and in doing so became the eighth different Italian team to win a European trophy.

Hamburger SV: Hamburger Sport-Verein e.V. ] , commonly known as Hamburger SV, Hamburg or HSV ] , is a German sport club based in Hamburg, its largest branch being its football department.  Although the current HSV was founded in June 1919 from a merger of three earlier clubs, it officially traces its origin to 29 September 1887 when the first of the predecessors, SC Germania, was founded.  HSV's football team has the unique distinction of having played continuously in the top tier of the German football league system since the end of World War I.  It is the only team that has played in every season of the Bundesliga since its foundation in 1963, at which time the team was led by German national captain Uwe Seeler.

Supporting paragraphs: 1977 European Cup Winners' Cup Final Hamburger SV
Answer: Anderlecht of Belgium