Line 4 (Yellow Line) is a line of the São Paulo Metro originally called Southeast-Southwest Line. When finalized it will go from Luz to Vila Sônia. The first stretch between and Faria Lima and Paulista stations opened on May 25 2010. Two other stations Butantã and Pinheiros took more time than expected to open but as of July 2011 they are fully operating. Actually the line go from Butantã to Luz.
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