query: SELECT
  ?item ?link (GROUP_CONCAT(DISTINCT ?position_label;SEPARATOR="<br/>") AS ?positions)
  ?birth_placeLabel ?ancestral_homeLabel (MAX(?rank_label) AS ?rank_label) WHERE {
    ?item p:P39 ?position_statement .
    ?position_statement ps:P39 ?position .
    ?position_statement pq:P580 ?start_time .
    FILTER NOT EXISTS { ?position_statement pq:P582 ?end_time } .
    ?position wdt:P279 ?rank .
    FILTER ( ?rank = wd:Q30945753