]> homeland_security.owl, v 1.0 2004/11/22 Homeland Security Ontology v1.0 Homeland Security Ontology Place Typically, entities of type Place include continents, regions, countries, states, cities Thing This class encompasses one of the three major divisions of the ontology by discarding persons and places Person This includes different types/specializations of person Event Any event Organization Any organization Agent Such as terror agent, .... Politician State Agent WatchList Watch lists! synonym Alias, aka, examples: Aleman, Boanerges Aleman, Aleman-Meza, B. Aleman listed in TerrorAgent listed in WatchList start_date_time Start Date/Time