<lamp>
<base><geon type="cylinder" shape="wide"/></base>
<neck><geon type="cylinder" shape="narrow"/></neck>
<lamp-proper>
<shade><geon type="cylinder" radius="1.0" height="1.0"/></shade>
<socket><geon type="cylinder" radius="0.4" height="0.4"/></socket>
</lamp-proper>
</lamp>
