| <svg xmlns="http://www.w3.org/2000/svg"> | |
| <clipPath id="clip"> | |
| <circle cx="0.5" cy="0.5" r="0.25"/> | |
| </clipPath> | |
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| <rect x="0.25" y="0.25" width="0.5" height="0.5" fill="white" clip-path="url(#clip)"/> | |
| </mask> | |
| <rect x="0" y="0" height="200" width="200" fill="green" mask="url(#mask)"/> | |
| </svg> |
