 material="color: blue"
                  geometry="primitive: box"
                  rotation="25 25 0"></a-entity>

        <a-entity id="redSphere"
                  material="color: red"
                  geometry="primitive: sphere;"
                  visible="false"></a-entity>

        <a-entity id="greenCylinder"
                  position="-3.5 0 0"
                  rotation="25 25 0"
                  material="color: green"
                  geometry="primitive: cylinder;"></a-entity>

        <