Question: What is the watercourse with the highest length whose country is Lithuania ?
Paraphrase: What is the name of the watercourse with the hightest length whose country is lithuania?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q355304 . ?ent wdt:P2043 ?obj . ?ent wdt:P17 wd:Q37 } ORDER BY DESC(?obj)LIMIT 5 
Answer: Jara-Šetekšna, Tenenys, Akmena, Siesartis, Virinta