query: #title: Participant of a conclave (papal election) without christian religion information
  # Complex constraint from [[Property talk:P140]]
  #
  SELECT ?item {
    ?item wdt:P1344 ?event.
    ?event wdt:P31 wd:Q186431.
    FILTER NOT EXISTS { ?item wdt:P140 wd:Q9592 }
    FILTER NOT EXISTS { ?item wdt:P140 wd:Q5043 }
  }