query: select DISTINCT ?item ?author
  with { # select all the numbers of sitelinks
    select ?number (count(*) as ?total) { # we don't use ?total but without it the query times out, so we'll just ignore it
      [] wikibase:sitelinks ?number .
    } group by ?number
  } as %numbers
  where {
    include %numbers .
    filter (?number > 20) .
    ?author wikibase:sitelinks ?number .
    ?author wdt:P31 wd:Q5.
    ?item wdt:P50 ?author .
    ?citing_work wdt:P2860 ?item .
    MINUS {?item wdt:P577 ?pub_date. }
  } order by desc(?number)
  LIMIT 1000