which writer of charlie the choo-choo also extended the work of graveyard shift ?
SELECT DISTINCT var_uri where brack_open dbr_Graveyard_Shift_ attr_open 1990_film attr_close dbo_basedOn var_uri sep_dot dbr_Charlie_the_Choo-Choo_ attr_open book attr_close dbo_author var_uri brack_close