Question: Which Helen Keller book was published in 1927?
Answer(s):
answer: Light in My Darkness

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.03ppx)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.03ppx ns:book.author.works_written ?x .
?x ns:common.topic.notable_types ns:m.01xryvm .
?x ns:book.written_work.date_of_first_publication "1927"^^xsd:dateTime . 
}