Who followed Jiang Zemin as the chairperson of the Communist Party of China?
SELECT ?value1 ?value2 WHERE { wd:Q17427 p:P488 ?s . ?s ps:P488 wd:Q16597 . ?s pq:P155 ?value1 . ?s pq:P156 ?value2 }
communist party of china: Q17427 jiang zemin: Q16597