When did Jack Kramer start playing for the United States Davis Cup team and when did it end?
SELECT ?value1 ?value2 WHERE { wd:Q54529 p:P54 ?s . ?s ps:P54 wd:Q1389353 . ?s pq:P582 ?value1 . ?s pq:P580 ?value2 }
jack kramer: Q54529 united states davis cup team: Q1389353