Question: Who is the empire heading the official spoken language of Latin?
Paraphrase: Which country is in charge of Latin, as an official spoken language?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P37 wd:Q397 . ?sbj wdt:P31 wd:Q48349 } 
Answer: Gallic Empire, Roman Empire, Byzantine Empire, Western Roman Empire (395-476 AD)