Question: Which country bordering South Africa has the highest calling code?
Answer(s):
answer: Swaziland

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0hzlz)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0hzlz ns:location.location.adjoin_s ?y .
?y ns:location.adjoining_relationship.adjoins ?x .
?x ns:location.country.calling_code ?num .
}
ORDER BY DESC(xsd:integer(?num)) LIMIT 1