Example 627
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www.google.com/search?q=commonmark&hl=en

www.google.com/search?q=commonmark&hl;

......

<p><a href="http://www.google.com/search?q=commonmark&amp;hl=en">www.google.com/search?q=commonmark&amp;hl=en</a></p>
<p><a href="http://www.google.com/search?q=commonmark">www.google.com/search?q=commonmark</a>&amp;hl;</p>