Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Sifone-it#Sense
Ondergrondse kwel-nl#Sense
Quelle unter dem Deich-de#Sense
Leak under the dyke-en#Sense
Διαρροή κάτω από ανάχωμα-el#Sense
Lækage under diget-da#Sense
Source par dessous la digue-fr#Sense