<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<defs>
<circle id="circle" cx="60" cy="60" r="50"/>
<clipPath id="clip-circle" clip-path="url(#clip-rect)">
<use xlink:href="#circle"/>
</clipPath>
<clipPath id="clip-rect">
<rect x="10" y="30" width="100" height="60"/>
</clipPath>
</defs>
<rect id="rect" x="10" y="10" width="100" height="100" fill="green" clip-path="url(#clip-circle)"/>
</svg>