Mention the predecessor and the successor of Star Wars Episode VI: Return of the Jedi in Star Wars series
SELECT ?value1 ?value2 WHERE { wd:Q181803 p:P179 ?s . ?s ps:P179 wd:Q22092344 . ?s pq:P155 ?value1 . ?s pq:P156 ?value2 }
return of the jedi: Q181803 star wars: Q22092344