About: http://webisa.webdatacommons.org/203121679

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Fortification is a construction that allows the passage of projectiles [in and out] and liquids, mist, steam, webs, fire, miasma and smoke, but not creatures, making them an important part in a fortress's defense.
http://www.w3.org/ns/prov#wasQuotedFrom	dwarffortresswiki.org