The Broken Kilometer
... that the 500 brass rods that make up Walter De Maria's The Broken Kilometer are polished every two years?
... that the 500 brass rods that make up <a href="./Walter_De_Maria" id="mwBjk" rel="mw:WikiLink" title="Walter De Maria">Walter De Maria</a>'s <i id="mwBjo"><b id="mwBjs"><a href="./The_Broken_Kilometer" id="mwBjw" rel="mw:WikiLink" title="The Broken Kilometer">The Broken Kilometer</a></b></i> are polished every two years?