Question: Which is the revolution that had it's location in the Russian Empire?
Paraphrase: Which is the transformation that had it's area within the Russian Realm?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P276 wd:Q34266 . ?sbj wdt:P31 wd:Q10931 } 
Answer: February Revolution, Revolution in the Kingdom of Poland, Russian Revolution