 Complete the following phrase:  At the beginning of the 2017-18 season, German bobsleigh coach René Spies paired Buckwitz with Mariama Jamanka. The pair were nicknamed the Berlin Bob, as Buckwitz and Jamanka are both from Berlin. Buckwitz and Jamanka won a silver medal at the 2018 Bobsleigh European Championships. At the 2018 Winter Olympics, Buckwitz and Jamanka competed in the 