Question: How many companies were founded in the same year as Google?
SPARQL query:
PREFIX onto: <http://dbpedia.org/ontology/>
PREFIX res: <http://dbpedia.org/resource/>
SELECT COUNT(DISTINCT ?c)
WHERE {
        ?c rdf:type onto:Company .
        ?c onto:foundingYear ?year .
        res:Google onto:foundingYear ?year .
}