Question: What pieces written by John Irving were published after 1981?
Answer(s):
answer: Trying to Save Piggy Sneed
answer: The Fourth Hand
answer: A Widow for One Year
answer: The Cider House Rules
answer: A Sound Like Someone Trying Not to Make a Sound
answer: Last Night in Twisted River
answer: A Prayer for Owen Meany
answer: Until I Find You
answer: In One Person
answer: A Son of the Circus

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.042v2)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.042v2 ns:book.author.works_written ?x .
?x ns:book.written_work.date_of_first_publication ?num .
FILTER (?num > "1981"^^xsd:dateTime) . 
}