Question: Which high-voltage direct current power line has the highest voltage?
Paraphrase: Name the high-voltage direct current power line with the highest voltage.
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q370607 . ?ent wdt:P2436 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: HVDC Yunnan–Guangdong, Cahora Bassa, EuroAsia Interconnector, EuroAfrica Interconnector, Ethiopia–Kenya HVDC Interconnector