machine_question: what to do and see in vienna austria and is the event that has been reocurring since 1993
question: What entertaining event in Vienna Austria has been happening since 1993?
sparql: PREFIX ns: <http://rdf.freebase.com/ns/>
  SELECT DISTINCT ?x
  WHERE {
  FILTER (?x != ns:m.0fhp9)
  FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
  ns:m.0fhp9 ns:travel.travel_destination.tourist_attractions ?x .
  ?x ns:time.recurring_event.date_of_first_occurance "1993"^^xsd:dateTime . 
  }
webqsp_question: what to do and see in vienna austria