query: #title: grandfather very old
  # Complex constraint from [[Property talk:P1038]]
  # grandfather at 120 years old
  SELECT ?item ?value ?bornItem ?bornValue ?diff {
    ?item p:P1038 ?statement.
    ?statement ps:P1038 ?value.
    ?statement pq:P1039 wd:Q9238344.
    ?item wdt:P569 ?bornItem.
    ?value wdt:P569 ?bornValue.  
    BIND( (?bornItem - ?bornValue)/365 AS ?diff ).
    FILTER (?diff > 120)
  }
  ORDER BY DESC(?diff)