Question: Where is the head office of the HSBC bank, located in citytown London Docklands?
Answer(s):
answer: 8 Canada Square

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01vq1f)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01vq1f ns:organization.organization.headquarters ?y .
?y ns:location.mailing_address.citytown ?x .
?x ns:location.location.street_address ?c .
?c ns:location.mailing_address.citytown ns:m.02fy_ . 
}