Question: What is the lake with the smallest surface area that has the highest relative chemical pollution?
Paraphrase: What lake has the highest relative chemical pollution with the smallest surface area?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q30092776 . ?ent wdt:P2046 ?obj . ?ent wdt:P3643 wd:Q28854976. } ORDER BY ASC(?obj)LIMIT 5 
Answer: Vessingesjön, Glänninge sjö, Abborrträsket, Hierkepieljaure lake, Gatesjön