Question: The 2001–02 NBA season was the Pacers' 26th season in the National Basketball Association, at midseason, the team traded Jalen Rose along with Travis Best to the Chicago Bulls for Ron Artest, before legally changing his name in September of which year, to Metta World Peace? 
Sentence (from "Metta World Peace"): He was known as Ron Artest before legally changing his name in September 2011.
Relevant evidence: Yes