what is the flagbearer of the antigua and barbuda at the 2012 summer olympics and antigua and barbuda at the 2004 summer olympics
SELECT DISTINCT var_uri where brack_open dbr_Antigua_and_Barbuda_at_the_2012_Summer_Olympics dbp_flagbearer var_uri sep_dot dbr_Antigua_and_Barbuda_at_the_2004_Summer_Olympics dbp_flagbearer var_uri brack_close