which silver medalist of the sailing at the 1988 summer olympics – men's 470 was also the flagbearer of the estonia at the 2000 summer olympics
SELECT DISTINCT var_uri where brack_open dbr_Sailing_at_the_1988_Summer_Olympics_–_Men's_470 dbo_silverMedalist var_uri sep_dot dbr_Estonia_at_the_2000_Summer_Olympics dbp_flagbearer var_uri brack_close