who rented the stadium where the athletics at the 2008 summer olympics – women's 20 kilometres walk take place ?
SELECT DISTINCT var_uri where brack_open dbr_Athletics_at_the_2008_Summer_Olympics_–_Women's_20_kilometres_walk dbp_venue var_x sep_dot var_x dbo_tenant var_uri sep_dot var_x a dbo_Stadium brack_close