which silver medalist of the athletics at the 1956 summer olympics – men's 400 metres was also the flagbearer of the united team of germany at the 1956 summer olympics
SELECT DISTINCT var_uri where brack_open dbr_Athletics_at_the_1956_Summer_Olympics_–_Men's_400_metres dbo_silverMedalist var_uri sep_dot dbr_United_Team_of_Germany_at_the_1956_Summer_Olympics dbp_flagbearer var_uri brack_close