list all the tenants of the stadium where the wwf swimming at the 2012 summer olympics – women's 4 × 100 metre freestyle relay took place .
SELECT DISTINCT var_uri where brack_open dbr_Swimming_at_the_2012_Summer_Olympics_–_Women's_4_×_100_metre_freestyle_relay dbp_venue var_x sep_dot var_x dbo_tenant var_uri brack_close