what is the source country of desaguadero river is also the land of cathedral basilica of our lady of peace ?
SELECT DISTINCT var_uri where brack_open dbr_Desaguadero_River_ attr_open Bolivia attr_close dbp_sourceCountry var_uri sep_dot dbr_Cathedral_Basilica_of_Our_Lady_of_Peace,_La_Paz dbo_country var_uri brack_close