which silver medalist of the athletics at the 2012 summer olympics – men's 800 metres was also the flagbearer of the botswana at the 2014 commonwealth games
SELECT DISTINCT var_uri where brack_open dbr_Athletics_at_the_2012_Summer_Olympics_–_Men's_800_metres dbo_silverMedalist var_uri sep_dot dbr_Botswana_at_the_2014_Commonwealth_Games dbp_flagbearer var_uri brack_close