query: #title: Signature != logotype
  # Complex constraint from [[Property talk:P109]]
  # Same value in [[Property:P109|signature&#32;<small dir="ltr">(P109)</small>]] and [[Property:P154|logo image&#32;<small dir="ltr">(P154)</small>]]
  SELECT ?item ?i {
    ?item wdt:P109 ?i; wdt:P154 ?i.
  }