<?xml version="1.0" encoding="UTF-8"?>
<document xmlns="http://commonmark.org/xml/1.0">
    <paragraph>
        <text>Hello World! </text>
        <footnote_ref reference="ref" />
    </paragraph>
    <footnote_container>
        <footnote reference="ref">
            <paragraph>
                <text>A common type of simple computer program</text>
                <footnote_backref reference="ref" />
            </paragraph>
        </footnote>
    </footnote_container>
</document>
