Passage: February, 2nd, 2010 – GS Group announced launching of the first 3D-broadcasting in Russia and Eastern Europe. On April 15, for the first time in Russia the live 3D broadcast was performed by the company (Gala concert in the Mariinsky Theatre). European premiere of the satellite channel with three-dimensional image 3DV was held on May 21 in London.

Question: Where was the premiere of the 3DV technology in Europe?
London