which silver medalist of the athletics at the 2012 summer olympics – men's 4 × 100 metres relay was also the flagbearer of the trinidad and tobago at the 2012 summer olympics
SELECT DISTINCT var_uri where brack_open dbr_Athletics_at_the_2012_Summer_Olympics_–_Men's_4_×_100_metres_relay dbo_silverMedalist var_uri sep_dot dbr_Trinidad_and_Tobago_at_the_2012_Summer_Olympics dbp_flagbearer var_uri brack_close