package org.gcube.informationsystem.model.entity.resource.cidoc;

/**
 * @author Luca Frosini (ISTI - CNR)
 * 
 * Scope note: This class comprises extents in space, in particular on the surface of the earth, in the pure sense of
 * physics: independent from temporal phenomena and matter.
 * 
 * The instances of E53 Place are usually determined by reference to the position of “immobile” objects
 * such as buildings, cities, mountains, rivers, or dedicated geodetic marks. A Place can be determined by
 * combining a frame of reference and a location with respect to this frame. It may be identified by one or
 * more instances of E44 Place Appellation.
 * 
 * It is sometimes argued that instances of E53 Place are best identified by global coordinates or absolute
 * reference systems. However, relative references are often more relevant in the context of cultural
 * documentation and tend to be more precise. In particular, we are often interested in position in relation
 * to large, mobile objects, such as ships. For example, the Place at which Nelson died is known with
 * reference to a large mobile object – H.M.S Victory. A resolution of this Place in terms of absolute
 * coordinates would require knowledge of the movements of the vessel and the precise time of death,
 * either of which may be revised, and the result would lack historical and cultural relevance.
 * 
 * Any object can serve as a frame of reference for E53 Place determination. The model foresees the
 * notion of a "section" of an E19 Physical Object as a valid E53 Place determination.
 * 
 * Examples:
 * - the extent of the UK in the year 2003
 * - the position of the hallmark on the inside of my wedding ring
 * - the place referred to in the phrase: “Fish collected at three miles north of the confluence of the 
 * 	 Arve and the Rhone”
 * - here -> <-
 * 
 * In First Order Logic:
 * E53(x) ⊃ E1(x)
 */
public interface E53_Place extends E1_CRM_Entity {
	
}
