Question: Which sibling of Alexander Graham Bell passed away in the year 1867?
Answer(s):
answer: Edward Charles Bell

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0k70)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0k70 ns:people.person.sibling_s ?y .
?y ns:people.sibling_relationship.sibling ?x .
?x ns:people.deceased_person.date_of_death "1867"^^xsd:dateTime . 
}