答えはコチラ

<table align="center" border=1>
 <tr>
  <td></td>
  <th>父</th>
  <th>母</th>
 </tr>
 <tr>
  <th>年齢</th>
  <td>42</td>
  <td>38</td>
 </tr>
 <tr>
  <th>職業</th>
  <td>会社員</td>
  <td>専業主婦</td>
 </tr>
</table>