query: #list of people in 1000 articles every wikipedia needs by ethnicity, gender and nationality
  SELECT ?person ?personLabel ?familynameLabel?gender ?genderLabel  ?nationality ?nationalityLabel ?ethnicity ?ethnicityLabel 
  WHERE
  {
  	?person wdt:P31 wd:Q5 .
      ?person wdt:P972 wd:Q5460604 .
    OPTIONAL {?person wdt:P734 ?familyname .}.
    OPTIONAL {?person wdt:P21 ?gender .}.
    OPTIONAL {?person wdt:P27 ?nationality .} . 
    OPTIONAL {?person wdt:P172 ?ethnicity .}.
  	SERVICE wikibase:label { bd:serviceParam wikibase:language "en" }
  } 