Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
List of counts of Burgundy
Table title:
House of Hohenstaufen, (1190–1231)
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Image </th><th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Date of birth </th><th colspan=1 rowspan=1 > Date of death </th><th colspan=1 rowspan=1 > Reign </th><th colspan=1 rowspan=1 > Relationship with predecessor </th></tr>
<tr> <td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > Otto I </td><td colspan=1 rowspan=1 > June/July 1170 </td><td colspan=1 rowspan=1 > 13 January 1200 </td><td colspan=1 rowspan=1 > 10 June 1190 to 13 January 1200 </td><td colspan=1 rowspan=1 > their son </td></tr>
<tr> <td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > Joan I </td><td colspan=1 rowspan=1 > 1191 </td><td colspan=1 rowspan=1 > 1205 </td><td colspan=1 rowspan=1 > 13 January 1200 to 1205 </td><td colspan=1 rowspan=1 > his daughter </td></tr>
<tr> <td colspan=1 rowspan=1 > - </td><td class="highlighted"  colspan=1 rowspan=1 > Beatrice II </td><td colspan=1 rowspan=1 > 1192 </td><td class="highlighted"  colspan=1 rowspan=1 > 7 May 1231 </td><td class="highlighted"  colspan=1 rowspan=1 > 1205 to 7 May 1231 </td><td colspan=1 rowspan=1 > her sister </td></tr>
<tr> <td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > Otto II </td><td colspan=1 rowspan=1 > 1180 </td><td colspan=1 rowspan=1 > 7 May 1234 </td><td colspan=1 rowspan=1 > 21 June 1208 to 7 May 1231 </td><td colspan=1 rowspan=1 > her husband and co-ruler </td></tr>
</table>
Question:
When did Beatrice II reign as the Countess of Burgundy?
Answer:
Beatrice II (died 7 May 1231) reigned as Countess of Burgundy from 1205 until her death.