query: #title: mismatch pattern and pattern on value of P1030
  # Complex constraint from [[Property talk:P1030]]
  # may be correct
  SELECT ?item ?ltho ?value ?pattern
  { 
    ?ltho p:P1030 [pq:P805 ?item; ps:P1030 ?value] .
    FILTER NOT EXISTS { ?item wdt:P31 wd:Q1738955 ; p:P1030/ps:P1030 ?value }
    OPTIONAL { ?item wdt:P1030 ?pattern }
  }