list the developers who has contributed to both cadillacs and dinosaurs: the second cataclysm and cadillacs and dinosaurs: the second cataclysm ?
SELECT DISTINCT var_uri where brack_open dbr_Cadillacs_and_Dinosaurs:_The_Second_Cataclysm dbo_developer var_uri sep_dot dbr_Cadillacs_and_Dinosaurs:_The_Second_Cataclysm dbo_developer var_uri brack_close