Question: What does the author who published, the book,  Business @ the Speed of Thought, own?
Answer(s):
answer: Bill Gates's house

SPARQL query:
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SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:book.author.book_editions_published ns:m.04v22vx . 
?c ns:architecture.architectural_structure_owner.structures_owned ?y .
?y ns:architecture.ownership.structure ?x .
}