Question: What was the genre of art created by the visual artist who made the art series "Butterflies?"?
Answer(s):
answer: Post-Impressionism

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:visual_art.visual_artist.art_series ns:m.0glsfzc . 
?c ns:visual_art.visual_artist.associated_periods_or_movements ?x .
}