When did Axel Oxenstierna serve as Lord High Chancellor of Sweeden, and when did his service end?
SELECT ?value1 ?value2 WHERE { wd:Q155127 p:P39 ?s . ?s ps:P39 wd:Q3259383 . ?s pq:P580 ?value1 . ?s pq:P582 ?value2 }
axel oxenstierna: Q155127 lord high chancellor of sweden: Q3259383