Question: What is the product with the lowest consumption rate per capita whose has part is paraffin wax?
Paraphrase: What product that contains paraffin wax has the lowest usage per capita?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q2424752 . ?ent wdt:P2662 ?obj . ?ent wdt:P527 wd:Q177540. } ORDER BY ASC(?obj)LIMIT 5 
Answer: petroleum