query: SELECT ?cause ?causeLabel (COUNT(?person) AS ?count)
  WHERE
  {
    ?person wdt:P31 wd:Q5;
            wdt:P509 ?cause;
            wdt:P53 [].
    SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
  }
  GROUP BY ?cause ?causeLabel
  HAVING(?count > 1)
  ORDER BY DESC(?count)