1. A resource that acts as a proxy for some subject; the topic map system's representation of that subject. The relationship between a topic and its subject is defined to be one of reification. Reification of a subject allows topic characteristics[?] to be assigned to the topic that reifies it.
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Spain
Centro Superior de Information de la Defensa[?] (CESID[?]) - 2002.
Centro Nacional de Inteligencia[?] (CNI[?]) (2002 - ...