Question: Which associate of Thomas bryan Martin is also the president of Carmichael ?
SPARQL query:
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
 SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Thomas_Bryan_Martin> onto:associate ?uri. <http://dbpedia.org/resource/William_Carmichael_(diplomat)> prop:president ?uri}