[jQuery] anyone can execute this simple XML code?

d.xml
---------
<?xml version="1.0" encoding="UTF-8"?>
<entries>
        <entry term="DANCE" part="v.i.">
                <definition>
                        123
                </definition>
        </entry>
</entries>
--------
d.html
---------
<script language="javascript">

                $(document).ready(function() {
                                $.get('d.xml',function(data) {
                                alert(data);//ok
                                        $(data).find('entry').each(function() {
                                                alert('find');
                                        });
                                });
                        });

        </script>
--------
IT CAN'T EXECUTE alert('find');
ONLY CAN EXECUTE alert(data);//ok

I DON'T KNOW WHY