what is the flagbearer of the gabon at the 2000 summer olympics and gabon at the 2008 summer olympics
SELECT DISTINCT var_uri where brack_open dbr_Gabon_at_the_2000_Summer_Olympics dbp_flagbearer var_uri sep_dot dbr_Gabon_at_the_2008_Summer_Olympics dbp_flagbearer var_uri brack_close