Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Ελεύθερη περιοχή-el#Sense
Spazio libero-it#Sense
Freier raum-de#Sense
Frit rum-da#Sense
Free space-en#Sense
Espace libre-fr#Sense
Vrije ruimte-nl#Sense
Espacio libre-es#Sense