<http://dbpedia.org/resource/John_C._Calhoun__2>	<http://dbpedia.org/ontology/activeYearsStartDate>	"1844-04-01Z"^^<http://www.w3.org/2001/XMLSchema#date> .
<http://dbpedia.org/resource/John_C._Calhoun__2>	<http://dbpedia.org/ontology/activeYearsEndDate>	"1845-03-10Z"^^<http://www.w3.org/2001/XMLSchema#date> .
<http://dbpedia.org/resource/John_C._Calhoun__2>	<http://dbpedia.org/ontology/office>	"16thUnited States Secretary of State" .