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chromium/third_party/blink/web_tests/editing/resources/svgcontent.xhtml 

<?xml version="1.0" standalone="no"?>
<body>
<div id="div1">Hello</div><svg width="5cm" height="3cm" viewBox="0 0 5 3" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
  <a xlink:href="javascript:alert('hello Enrica')">
    <ellipse cx="2.5" cy="1.5" rx="2" ry="1"
             fill="red" />
  </a>
</svg><div id="div2">world</div>
</body>