What killed John F. Kennedy and who caused him ballistic trauma?
SELECT ?value1 ?value2 WHERE { wd:Q9696 p:P509 ?s . ?s ps:P509 wd:Q2140674 . ?s pq:P157 ?value1 . ?s pq:P1542 ?value2 }
john f. kennedy: Q9696 ballistic trauma: Q2140674