A man remains in front of the installation of the exposition of Chilean artist Voluspa Jarpa, during the presentation to media representatives of the 31st Sao Paulo's International Art Biennial, in the Ibirapuera Park, in Sao Paulo, Brazil, on Sept. 1, 2014. The theme of the Biennial will be "How to talk of things that don't exist?", and will have the participation of over 100 artists of 34 countries that will present at least 250 works of art. The event will take place from Sept. 6 to Dec. 7, 2014. (Xinhua/Rahel Patrasso)