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Thursday, 6th November 2014 Chicago, USA. Helmut Jahn, CEO, JAHN, Tomohiko Yamanashi, Design Principal, Nikken Sekkei, Dakki Hui, Senior Property & Facility Manager, Kai Shing Management Services Limited and Douglas Durst, Chairman, Durst Organization answer questions immediately following Session 2 of the 13th Annual Best Tall Building Symposium.