which river's source mountain is guadalajara and it's mouth is castejón de las armas ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_sourceMountain dbr_Guadalajara_ attr_open province attr_close sep_dot var_uri dbo_riverMouth dbr_Castejón_de_las_Armas sep_dot var_uri a dbo_River brack_close