Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Unbroken line-en#Sense
Spærrelinje-da#Sense
Barrier line-en#Sense
Ununterbrochene Linie-de#Sense
Niet-overschrijdingsstreep-nl#Sense
Striscia continua-it#Sense
Bande infranchissable-fr#Sense
Sicherheitslinie-de#Sense
Sperrlinie-de#Sense
Prohibitory line-en#Sense