Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Ponto de referência R-pt#Sense
Viitekohta R-fi#Sense
Referentiepunt R-nl#Sense
Σημείο αναφοράς R-el#Sense
Point de référence R-fr#Sense
Bezugspunkt R-de#Sense
Punto di riferimento R-it#Sense
Referenspunkt R-sv#Sense
Punto de referencia R-es#Sense
Reference point R-en#Sense