<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
<head>
  <title>Test 0291</title>
</head>
<body>
  <h1>@href as subject overridden by @about</h1>
  <a about="http://example.net/" href="http://example.org/" property="rdf:value" content="value">ignored</a>
</body>
</html>