which silver medalist of the athletics at the 2016 summer olympics – men's 4 × 400 metres relay was also the flagbearer of the jamaica at the 2016 summer olympics
SELECT DISTINCT var_uri where brack_open dbr_Athletics_at_the_2016_Summer_Olympics_–_Men's_4_×_400_metres_relay dbo_silverMedalist var_uri sep_dot dbr_Jamaica_at_the_2016_Summer_Olympics dbp_flagbearer var_uri brack_close