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:
Swimming at the 2008 Summer Olympics – Women's 800 metre freestyle
Table title:
Final
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Rank </th><th colspan=1 rowspan=1 > Lane </th><th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Nationality </th><th colspan=1 rowspan=1 > Time </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > Rebecca Adlington </td><td colspan=1 rowspan=1 > Great Britain </td><td colspan=1 rowspan=1 > 8:14.10 </td><td colspan=1 rowspan=1 > WR </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > Alessia Filippi </td><td colspan=1 rowspan=1 > Italy </td><td colspan=1 rowspan=1 > 8:20.23 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > Lotte Friis </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > 8:23.03 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > 5 </td><td colspan=1 rowspan=1 > Camelia Potec </td><td colspan=1 rowspan=1 > Romania </td><td colspan=1 rowspan=1 > 8:23.11 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 5 </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > Li Xuanxu </td><td colspan=1 rowspan=1 > China </td><td colspan=1 rowspan=1 > 8:26.34 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > Kylie Palmer </td><td colspan=1 rowspan=1 > Australia </td><td colspan=1 rowspan=1 > 8:26.39 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 7 </td><td colspan=1 rowspan=1 > 7 </td><td class="highlighted"  colspan=1 rowspan=1 > Yelena Sokolova </td><td class="highlighted"  colspan=1 rowspan=1 > Russia </td><td class="highlighted"  colspan=1 rowspan=1 > 8:29.79 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 8 </td><td colspan=1 rowspan=1 > 8 </td><td class="highlighted"  colspan=1 rowspan=1 > Cassandra Patten </td><td class="highlighted"  colspan=1 rowspan=1 > Great Britain </td><td class="highlighted"  colspan=1 rowspan=1 > 8:32.35 </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
Which athletes secured the last two ranks in the finale of Women's 800 metre freestyle at the 2008 Summer Olympics, by how much and what time records?
Answer:
Russia's Yelena Sokolova (8:29.79) and Britain's Cassandra Patten (8:32.35) rounded out the finale of Women's 800 metre freestyle at the 2008 Summer Olympics.