what is the river whose source place is kanangra-boyd national park and mouth place is kanangra-boyd national park ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_sourcePlace dbr_Kanangra-Boyd_National_Park sep_dot var_uri dbo_mouthPlace dbr_Kanangra-Boyd_National_Park sep_dot var_uri a dbo_River brack_close