Question: Which book has the most pages?
SPARQL query:
PREFIX onto: <http://dbpedia.org/ontology/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 
SELECT DISTINCT ?uri
WHERE { 
        ?uri rdf:type onto:Book . 
        ?uri onto:numberOfPages ?n .
}
ORDER BY DESC(?n)
OFFSET 0 LIMIT 1