BERLIN, GERMANY - JUNE 24: German President Joachim Gauck (L), his partner Daniela Schadt (2nd L) Britain's Queen Elizabeth II (2nd R) and her husband Prince Philip (R), the Duke of Edinburgh are seen during a boat trip on the River Spree to the chancellery in Berlin on June 24, 2015. (Photo by Cuneyt Karadag/Anadolu Agency/Getty Images)
