machine_question: where was the roman empire centered and the location time zone is Central European Time Zone
question: Where in the Central European Time Zone was the Roman Empire centered?
sparql: PREFIX ns: <http://rdf.freebase.com/ns/>
  SELECT DISTINCT ?x
  WHERE {
  FILTER (?x != ns:m.06cmp)
  FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
  ns:m.06cmp ns:location.country.capital ?x .
  ?x ns:location.location.time_zones ns:m.02llzg . 
  }
webqsp_question: where was the roman empire centered