a brass rod
... that a brass rod with a length of 1 kilometre (0.62 mi) was inserted into the ground as a permanent art installation in Kassel, Germany?
... that <b id="mwBpY"><a href="./The_Vertical_Earth_Kilometer" id="mwBpc" rel="mw:WikiLink" title="The Vertical Earth Kilometer">a brass rod</a></b> with a length of <span about="#mwt80" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"1"},"2":{"wt":"km"},"3":{"wt":"mi"}},"i":0}}]}' id="mwBpg" typeof="mw:Transclusion">1 kilometre (0.62</span><span about="#mwt80" typeof="mw:Entity"> </span><span about="#mwt80">mi)</span> was inserted into the ground as a permanent art installation in <a href="./Kassel" id="mwBpk" rel="mw:WikiLink" title="Kassel">Kassel</a>, Germany?