Question: What are the children's names of the person who wrote "The Poor Soul Sat Sighing"?
Answer(s):
answer: Hamnet Shakespeare
answer: Judith Quiney
answer: Susanna Hall

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:music.lyricist.lyrics_written ns:m.0zh9cl1 . 
?c ns:people.person.children ?x .
}