 Complete the following phrase:  Gottfried Diener November 1, 1926  May 26, 2015 was a Swiss bobsledder who competed in the mid-1950s. He won the gold medal in the four-man event at the 1956 Winter Olympics in Cortina dAmpezzo. Diener also won two gold medals in the four-man event at the FIBT World Championships, winning them in 