Question: What is the seating capacity of the stadium in which The 1988 Soviet Cup Final football match that took place?

Context paragraphs:
1979 Soviet Cup Final: The 1979 Soviet Cup Final was a football match that took place at the Lenin's Central Stadium, Moscow on 11 August 1979.  The match was the 38th soviet cup final and was contested between Dynamo Moscow and Dinamo Tbilisi.  Previous cup holders Dynamo Kyiv were eliminated in Quarter-finals by CSKA Moscow.  Dinamo Tbilisi defeated the opponent on penalties and won the cup for the second time.

1990 Soviet Cup Final: The 1990 Soviet Cup Final was a football match that took place at the Lenin's Central Stadium, Moscow on 2 May 1990.  The match was the 49th Soviet Cup Final and it was contested by FC Dynamo Kyiv and FC Lokomotiv Moscow.  The Soviet Cup winner Dynamo qualified for the Cup Winners' Cup first round for the Soviet Union.  The last year defending champions Dnipro Dnipropetrovsk were eliminated in the first round of the competition (1/16 of final) by PFC CSKA Moscow on away goal rule (1:1, 2:2).  Dynamo played their 10th Cup Final winning on 9 occasions including this one.  For Lokomotiv it was their only third Cup Final and the only loss at this stage.

1987 Soviet Cup Final: The 1987 Soviet Cup Final was a football match that took place at the Lenin's Central Stadium, Moscow on June 14, 1987.  The match was the 46th Soviet Cup Final and it was contested by FC Dynamo Kyiv and FC Dinamo Minsk.  The Soviet Cup winner Dynamo won the cup for the eighth time.  The last year defending holders Torpedo Moscow were eliminated in the quarterfinals of the competition by FC Dinamo Minsk 3:2.

1976 Soviet Cup Final: The 1976 Soviet Cup Final was a football match that took place at the Lenin's Central Stadium, Moscow on 3 September 1976.  The match was the 35th soviet cup final and was contested between Dinamo Tbilisi and Ararat Yerevan.  Ararat were current cup holders winning it in 1975.  Dinamo defeated the opponent 3–0 and won the cup for the first time.

1988 Soviet Cup Final: The 1988 Soviet Cup Final was a football match that took place at the Lenin's Central Stadium, Moscow on May 28, 1988.  The match was the 47th Soviet Cup Final and it was contested by FC Metalist Kharkiv and FC Torpedo Moscow.  The Soviet Cup winner Metalist qualified for the Cup Winners' Cup first round for the Soviet Union.  The last year defending holders Dynamo Kyiv were eliminated in the second round of the competition by FC Rotor Volgograd (3:2, 0:2).  For Metalist this was their second final total and second in five years.  For Torpedo it was their 13th Cup Final and the seventh loss at this stage.

Luzhniki Stadium: Luzhniki Stadium (Russian: Стадион «Лужники» ; ] ), is a sports stadium in Moscow, Russia.  Its total seating capacity is 81,000 seats, all covered (upgraded).  The stadium is a part of the Luzhniki Olympic Complex, and is located in Khamovniki District of the Central Administrative Okrug of Moscow city.  The name "Luzhniki" derives from the flood meadows in the bend of Moskva River where the stadium was built, translating roughly as "The Meadows".  Its the biggest stadium in eastern Europe.

1991 Soviet Cup Final: The 1991 Soviet Cup Final was a football match that took place at the Lenin's Central Stadium, Moscow on 23 June 1991.  The match was the jubilee 50th Soviet Cup Final and it was contested by PFC CSKA Moscow and FC Torpedo Moscow.  The Soviet Cup winner CSKA qualified for the Cup Winners' Cup first round for the Soviet Union.  CSKA played their 7th Cup Final winning on 5 occasions including this one.  For Torpedo it was their 15th Cup Final and for the ninth time they were defeated at this stage.

1936 Soviet Cup Final: The 1936 Soviet Cup Final was a football match that took place at the Dynamo Stadium, Moscow on August 28, 1936.  The match was the first Soviet Cup final and it was contested by Lokomotiv Moscow and Dinamo Tbilisi.  At one point the competition was decided to be the Soviet championship by the Olympic system of elimination, but later it was decided to keep the already existing championship and create a new one called the Cup of the Supreme Council of Fitness and Sport.

1986 Soviet Cup Final: The 1986 Soviet Cup Final was a football match that took place at the Lenin's Central Stadium, Moscow on May 2, 1986.  The match was the 45th Soviet Cup Final and it was contested by FC Torpedo Moscow and FC Shakhtar Donetsk.  The Soviet Cup winner Torpedo won the cup for the sixth time.  The last year defending holders Dynamo Kyiv were eliminated in the round of 16 of the competition by FC Spartak Moscow on penalties.

1989 Soviet Cup Final: The 1989 Soviet Cup Final was a football match that took place at the Lenin's Central Stadium, Moscow on June 25, 1989.  The match was the 48th Soviet Cup Final and it was contested by FC Dnipro Dnipropetrovsk and FC Torpedo Moscow.  The Soviet Cup winner Dnipro qualified for the Champions Cup for winning the champion's title, while the finalist Torpedo was allowed to compete at the Cup Winners' Cup first round for the Soviet Union.  The last year defending champions Metalist Kharkiv were eliminated in the second round of the competition by FC Torpedo Moscow (1:1, 1:2).  For Dnipro this was their very first final.  For Torpedo it was their 14th Cup Final and the eighth loss at this stage.

Supporting paragraphs: 1988 Soviet Cup Final Luzhniki Stadium
Answer: 81,000 seats