query: SELECT DISTINCT ?item where {
   ?item wdt:P31 wd:Q5 ; wikibase:sitelinks ?slct . 
   FILTER ( ?slct >= 1 ) .
   OPTIONAL { ?item wdt:P21 ?gender } .
   FILTER ( !BOUND (?gender ) ) .
   BIND (xsd:integer(STRAFTER(str(?item), "Q")) AS ?qid)
   FILTER ( ?qid > 7250000 ). # 12-jan-2017 
   FILTER ( ?qid > 17250000 ). # 12-jan-2017 
  }