Question: What trilogy was Star Wars Episode V: The Empire Strikes Back a part of?
Paraphrase: What set of three was Star Wars Scene V: The Realm Strikes Back a portion of?
SPARQL (Wikidata):  select distinct ?obj where { wd:Q181795 wdt:P179 ?obj . ?obj wdt:P31 wd:Q13593818 } 
Answer: Star Wars Trilogy