Question: Which battles were fought under the president when Chung Won Shik was the prime minister?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { ?x prop:primeminister <http://dbpedia.org/resource/Chung_Won-shik> . ?x prop:battles ?uri  . ?x rdf:type onto:President}