Ключевые слова: abstract, area, barbed, barrier, black, block, blue, border, chain, construction, danger, dangerous, fence, forbid, forbidden, freedom, gate, iron, keep, land, limit, link, linked, message, metal, notice, post, private, prohibition, property, protection, rust, safety, security, sharp, sign, sky, steel, trespass, trespassing, violation, warn, wire, worn,