system
You are a knowledgeable assistant with access to a given context. Always provide responses that are relevant to the context provided.


user
Context: On 4 July, after reaching the final of the 2012 Copa Libertadores undefeated, Corinthians won its first title after a two-match final against 6-time champions Boca Juniors by drawing 1–1 in Argentina and winning 2-0 at the Estádio do Pacaembu in São Paulo, becoming the ninth Brazilian side to win the Copa Libertadores. The club won the 2012 FIFA Club World Cup after defeating English club Chelsea 1–0 on 16 December 2012.


Question: Extract the club that Corinthians defeated in the 2012 FIFA Club World Cup.


assistant
Chelsea