claim: Mikhail Prokhorov is the former chairman of Russia's largest gold producer.
evidence: Hansa-Automobil Gesellschaft m.b.H was a German car brand established in 1905 , which in 1914 was merged with Norddeutsche Automobil und Motoren AG -LRB- NAMAG -RRB- into Hansa-Lloyd-Werke A.G. .. From 1929 to 1931 it was taken over by the Borgward group .. Borgward. Borgward. Hansa was based in the Bremen suburb of Hastedt .. Bremen. Bremen ( city )