Question: Which Wikimedia article lists X-Files characters?
Paraphrase: Which Wikimedia article records X-Files characters?
SPARQL (Wikidata):  select distinct ?obj where { wd:Q2744 wdt:P1881 ?obj . ?obj wdt:P31 wd:Q13406463 } 
Answer: list of minor The X-Files characters, list of Monster-of-the-Week characters in The X-Files, list of The X-Files characters