<table>
    <tbody>
        <tr>
            <td>First cell in first table. The cell to the right has the second table in it.</td>
            <td>

                <table>
                    <tbody>
                        <tr><td>nested table</td></tr>
                        <tr><td>nested table</td></tr>
                    </tbody>
                </table>

            </td>
        </tr>
    </tbody>
</table>