Question: The 1970–71 DFB-Pokal was the 28th season of the annual German football cup competition, in the final Bayern Munich defeated 2–1, which German association football club based in Cologne, and was formed in 1948 as a merger of the clubs "Kölner Ballspiel-Club 1901" and "SpVgg Sülz 07"?

Context paragraphs:
1983–84 DFB-Pokal: The 1983–84 DFB-Pokal was the 41st season of the annual German football cup competition.  It began on 16 August 1983 and ended on 31 May 1984.  In the final Bayern Munich defeated Borussia Mönchengladbach 8–7 on penalties to take their seventh title.  It was the first time the cup final was decided by a penalty shootout.  Controversy raged after the penalty shoot out.  Lothar Matthäus was playing his last game for Moenchengladbach before his big Summer move to Bayern.  He stepped up to take the first penalty for Borussia and missed.  Loyal Borussia fans claimed foul.  This was later denied by Matthäus.

1. FC Köln: 1.  Fußball-Club Köln 01/07 e. V., commonly known as simply 1.  FC Köln or FC Cologne in English (] ), is a German association football club based in Cologne.  It was formed in 1948 as a merger of the clubs "Kölner Ballspiel-Club 1901" and "SpVgg Sülz 07".  Köln play in the Bundesliga, the highest league of German football.

1968–69 DFB-Pokal: The 1968–69 DFB-Pokal was the 26th season of the annual German football cup competition.  It began on 4 January 1969 and ended on 14 June 1969.  32 teams competed in the tournament of five rounds.  In the final Bayern Munich defeated Schalke 04 2–1, thereby winning their third title within four years and the fourth overall, making them the team with the most cup wins.  It was also Bayern's first double.

1970–71 DFB-Pokal: The 1970–71 DFB-Pokal was the 28th season of the annual German football cup competition.  It began on 12 December 1970 and ended on 19 June 1971.  32 teams competed in the tournament of five rounds.  In the final Bayern Munich defeated FC Köln 2–1 after extra time.  It was Bayern's fifth triumph in the cup while it was Cologne's second consecutive loss in the final.

1966–67 DFB-Pokal: The 1966–67 DFB-Pokal was the 24th season of the annual German football cup competition.  It began on 25 December 1966 and ended on 10 June 1967.  32 teams competed in the tournament of five rounds.  In the final Bayern Munich defeated Hamburg 4–0, thus defending their title from the previous season.

1999–2000 DFB-Pokal: The 1999–2000 DFB-Pokal was the 57th season of the annual German football cup competition.  It began on 31 July 1999 and ended on 6 May 2000.  In the final Bayern Munich defeated Werder Bremen 3–0 to take their tenth title.

1956–57 DFB-Pokal: The 1956–57 DFB-Pokal was the 14th season of the annual German football cup competition.  It began on 1 April 1957 and ended on 29 December 1957.  4 teams competed in the tournament of two rounds.  In the final Bayern Munich defeated Fortuna Düsseldorf 1 – 0, thereby winning their first title.

1965–66 DFB-Pokal: The 1965–66 DFB-Pokal was the 23rd season of the annual German football cup competition.  It began on 22 January 1966 and ended on 4 June 1966.  32 teams competed in the tournament of five rounds.  In the final Bayern Munich defeated Meidericher SV 4–2.

1981–82 DFB-Pokal: The 1981–82 DFB-Pokal was the 39th season of the annual German football cup competition.  It began on 28 August 1981 and ended on 1 May 1982.  In the final Bayern Munich defeated FC Nuremberg 4–2.  Bayern thus won the trophy for the sixth time.  It was the last season, that the cup was held with 128 teams participating.  Afterwards the competition was scaled down to 64 teams.

1997–98 DFB-Pokal: The 1997–98 DFB-Pokal was the 55th season of the annual German football cup competition.  64 teams competed in the tournament of six rounds which began on 14 August 1997 and ended on 16 May 1998.  In the final Bayern Munich defeated MSV Duisburg 2–1 thereby claiming their ninth title.

Supporting paragraphs: 1970–71 DFB-Pokal 1. FC Köln
Answer: FC Köln