Question: The 1999–2000 UEFA Cup was won with a winning goal by a footballer that was the former captain of what team?

Context paragraphs:
Sandjar Ahmadi: Sandjar Ahmadi is an Afghan footballer who currently plays for Hamm United FC and Afghanistan national football team.  He scored two goals against Sri Lanka in 2011 SAFF Championship which helped the national team to win 3–1.  At 21 years of age, Ahmadi is one of the Afghanistan national football team's best players.  He scored the winning goal against Laos in the AFC Challenge Cup qualifiers.  He scored against Pakistan in a friendly on August 20, 2013.  He scored The winning goal against Nepal in the 2013 SAFF Championship to take his nation to the finals.  And then in the final he scored the winning goal against the Indian national football team to earn his country their first ever FIFA tournament win.  The team was also granted $50,000 US Dollars for being the champions.  In an interview with Afghanistan's captain Zohib Islam Amiri, Amiri said "He is a great player, and we couldn't have won this without him."

2000 UEFA Super Cup: The 2000 UEFA Super Cup was a football match played on 25 August 2000 between Real Madrid of Spain and Galatasaray of Turkey.  Real Madrid qualified by beating Valencia in the 2000 UEFA Champions League Final, while Galatasaray had made it to the Super Cup after beating Arsenal in the 2000 UEFA Cup Final.  Galatasaray won the match 2–1, both goals scored by Mário Jardel, the latter a golden goal.

Sport in Belgium: Sport in Belgium plays a prominent role in the society.  As of 2010, Belgium counted around 17,000 sport clubs with approximately 1.35 million members, thus 13% of the Belgian population is involved in sport.  Popular sports in Belgium are among others football, cycling, tennis, table tennis, athletics, swimming, basketball, badminton, judo, hockey, motocross, auto racing, volleyball and running.  Belgium has organized the 1920 Olympic Games in Antwerp as well as the 1972 UEFA European Championship and the 2000 UEFA European Championship along with the Netherlands.  The Belgium national football team best result was a 4th place at the 1986 FIFA World Cup and a second place of the 1980 UEFA European Championship.  Belgian football clubs have won 3 times the UEFA Cup Winners Cup and twice the UEFA Cup, plus 3 times the UEFA Supercup.

2000 UEFA Cup Final riots: The 2000 UEFA Cup Final Riots, also known as the Battle of Copenhagen, were a series of riots in City Hall Square in Copenhagen, Denmark, between fans of English football team Arsenal and Turkish side Galatasaray around the 2000 UEFA Cup Final on 17 May 2000.  The scuffles, in which four people were stabbed, also involved fans from other clubs and were viewed by the media as part of a retaliation for the killing of two Leeds United fans by Galatasaray supporters the month before.

2005 UEFA Cup Final: The 2005 UEFA Cup Final was the final match of the 2004–05 UEFA Cup, the 34th season of the UEFA Cup, UEFA's second-tier club football tournament.  The match was contested by Sporting CP and CSKA Moscow; CSKA won the match 3–1.  Sporting CP opened the scoring in the first half from full-back Rogério, before Aleksei Berezutskiy equalised in the second half.  Yuri Zhirkov would give the Russian side the lead nine minutes after CSKA's equalising goal, and the Moscow outfit would close out the scoring 15 minutes from the end after a quick CSKA counterattack saw Vágner Love fire the ball past Sporting goalkeeper Ricardo to give the Russian side a first UEFA Cup trophy.

2000 UEFA Champions League Final: The 2000 UEFA Champions League Final was a football match that took place on 24 May 2000.  The match was played at Stade de France in Saint-Denis, France, to determine the winner of the 1999–2000 UEFA Champions League.  The final pitted Spanish teams Real Madrid and Valencia.  It was the first time in the Champions League or the European Cup that two clubs from the same country competed in the final.

2000 UEFA Cup semi-final violence: The 2000 UEFA Cup semi-final violence was a series of violent incidents in Istanbul, Turkey between fans of English football team Leeds United and Turkish team Galatasaray before the first match of the UEFA Cup semi-final.  The violence happened on 5 April 2000 between fans of the two clubs where two Leeds fans were stabbed to death by Galatasaray fans.  Four men were arrested and charged with their murders.  The deaths led to an angry reaction in England with Galatasaray fans being banned from attending the second leg in England.

2000 UEFA Cup Final: The 2000 UEFA Cup Final was a football match that took place on 17 May 2000 at Parken Stadium in Copenhagen, Denmark to decide the winner of the 1999–2000 UEFA Cup.  The game event pitted Galatasaray of Turkey and Arsenal of England, and was the final match of the 1999–2000 season, the 29th final of Europe's second largest club football competition, the UEFA Cup.  It was Galatasaray's first appearance, in a final of a European tournament and Arsenal's first UEFA Cup final.

1999–2000 UEFA Cup: The 1999–2000 UEFA Cup season was the 29th edition of the UEFA Cup competition.  The final took place at Parken Stadium in Copenhagen and was won by Galatasaray, who defeated Arsenal in the final.  The game was scoreless through the first ninety minutes and stayed that way through thirty minutes of extra time.  The match went on to penalty kicks in which Gheorghe Popescu scored the winning goal to win the cup.  Galatasaray won the cup without losing a single game.  The competition was marred by violence involving English and Turkish hooligans in the semi-finals and the final, in particular the fatal stabbings of Leeds United fans Kevin Speight and Christopher Loftus by Galatasaray fans in Istanbul.

Gheorghe Popescu: Gheorghe "Gică" Popescu (] ; born 9 October 1967) is a retired Romanian football defender, former captain of FC Barcelona and key part of the Romania national team in the 1990s.  He played for a string of European clubs in that period, including a four-year stint at PSV Eindhoven.  His tactical knowledge as a defender made him a valuable team member in top European competitions until he reached his late-thirties.  Beside from his defending skills, he was also capable starting attacks.  He is the brother-in-law of fellow Romanian international Gheorghe Hagi.

Supporting paragraphs: 1999–2000 UEFA Cup Gheorghe Popescu
Answer: FC Barcelona