query: SELECT ?item ?dateOfBirth WHERE {
    ?item wdt:P31 wd:Q13442814;
          wdt:P577 ?dateOfBirth. hint:Prior hint:rangeSafe true.
    FILTER("1978-00-00"^^xsd:dateTime <= ?dateOfBirth &&
           ?dateOfBirth < "1979-00-00"^^xsd:dateTime)
  }