Title: Rivaldo
Content:  Rivaldo signed a three-year deal with the Italian Serie A club Milan. With Milan, he won the Coppa Italia and the Champions League in the 2002–03 season. In August 2003, he also won the UEFA Super Cup before cancelling his contract with Milan in November that year. After leaving Milan, he briefly returned to Brazil, playing for Cruzeiro in Belo Horizonte. He came close to signing for Bolton Wanderers in 2004, though Bolton eventually pulled out of the deal. Due to his poor performances throughout the season, he won the Bidone d'Oro Award in 2003, which is given to the worst Serie A player during a particular season.
Title: 2003–04 Manchester United F.C. season
Content:  The 2003–04 season was Manchester United's 12th season in the Premier League, and their 29th consecutive season in the top division of English football. United started the season by winning the 2003 FA Community Shield and then secured a record eleventh FA Cup with a 3–0 win over Millwall at the Millennium Stadium in Cardiff. However, the club surrendered the Premier League title to unbeaten champions Arsenal, with a second-half dip in league form coinciding with Rio Ferdinand starting an eight-month ban from football due to a missed drugs test and restricting United to a third-place finish. New to the United side were Portuguese winger Cristiano Ronaldo, Brazilian 2002 FIFA World Cup-winning midfielder Kléberson, American goalkeeper Tim Howard, Cameroonian midfielder Eric Djemba-Djemba and French striker David Bellion. United's UEFA Champions League and League Cup dreams ended in the last 16, with the European exit being particularly painful as a last minute goal by eventual champions Porto put them out of the competition and denied them an eighth successive Champions League quarter-final.
Title: Ronaldo (Brazilian footballer)
Content:  Monaco, and suffered a league form breakdown. During that second season at the club, Ronaldo scored one of the fastest goals in the club's history when he netted after 15 seconds in a league match against Atlético Madrid at the Bernabéu on 3 December 2003. Three days later he helped to ensure Real's first league victory over Barcelona at the Nou Camp in 20 years when he scored the second goal in a 2–1 victory over his former club. He finished the season as La Liga's top scorer with 25 goals and received the Pichichi Trophy for a second time, despite Madrid losing the league title to Valencia.
Title: 2003–04 Real Madrid CF season
Content:  The 2003–04 season was Real Madrid C.F.'s 73rd season in La Liga. This article shows statistics of the club's players in the season, and also lists all matches that the club played in the 2003–04 season. It was the last time that Real Madrid finished below second place until the 2013–14 season. The club played the season wearing their classic white home and teal blue away kits.
Title: C.D. Nacional
Content:  for being one of the clubs that formed Portuguese international Cristiano Ronaldo and to honour the club's most famous player they named their youth training facilities Cristiano Ronaldo Câmpus Futebol. The Alvinegros best top-tier league finish was fourth in the 2003–04 Primeira Liga season and their best participation in European competitions was in the 2009–10 UEFA Europa League after beating Zenit St. Petersburg in the play-off round and managing to secure a third place in the group stage. Like many other Portuguese clubs, Nacional operates several sports teams outside the football team. Other sports groups within the organisation include beach soccer, boxing, artistic gymnastics, rhythmic gymnastics, tennis, triathlon, muay thai, padel, rallying, swimming and veterans' soccer.
Title: Rolando (footballer)
Content:  Rolando started 2011–12 in scoring fashion, netting both goals in the Portuguese Supercup, a 2–1 victory over Vitória S.C. in Aveiro. On 30 January 2013, completely ostracised by manager Vítor Pereira as practically all Portuguese players, he was transferred to S.S.C. Napoli of the Serie A, being loaned until June. On 10 August 2013, Inter Milan confirmed the signing of Rolando in a season-long loan, for €600,000. He scored his first goal for the side on 27 October, contributing to a 4–2 home defeat of Hellas Verona FC. In February 2015, after spending the first half of the new campaign ousted from the squad due to a run-in with the board of directors after he refused to join the team's pre-season, Rolando was loaned to R.S.C. Anderlecht until June.
Title: 2003–04 Real Madrid CF season
Content:  (transferred to Chelsea in August 2003)
Title: Cristiano Ronaldo
Content:  Following the 2012–13 winter break, Ronaldo captained Madrid for the first time in an official match, scoring twice to lift 10-man Madrid to a 4–3 win over Sociedad on 6 January. He subsequently became the first non-Spanish player in 60 years to captain Madrid in El Clasico on 30 January, a match which also marked his 500th club appearance. Three days prior, he had scored his 300th club goal as part of a perfect hat-trick against Getafe. He scored his 200th goal for Madrid on 8 May in a 6–2 win against Málaga, reaching the landmark in 197 games. He helped Madrid reach the 2013 Copa 
Title: 2003–04 Sporting CP season
Content:  Sporting Clube de Portugal had a disappointing season in the wake of the selling of starlet Cristiano Ronaldo to Manchester United. They finished one point behind arch rivals Benfica, who clinched the final spot for the Champions League thanks to a late goal by Geovanni in the penultimate round of the season in the Lisbon derby.
Title: Ronaldo (Brazilian footballer)
Content:  series of injuries] would have been even more dangerous, but it shows how good a player he was. Whenever he wanted to turn it on he could, on any stage, in any stadium". Ronaldo scored in a 2–1 home win over Juventus in the first leg of the Champions League semi-finals, but injury crucially kept him out of most of the second leg defeat where Real were eliminated. In the 2003–04 season, Madrid were on track to win the treble, until Ronaldo was injured towards the end of the season; they subsequently lost the Copa del Rey final, were knocked out of the UEFA Champions League quarter-finals to 

Question: what team did ronaldo play for in 2003?
Answer: Real Madrid C.F.