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:
Oscar Pistorius
Table title:
Non-disabled sports events
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Time (seconds) </th><th colspan=1 rowspan=1 > Result </th><th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Event </th></tr>
<tr> <td colspan=4 rowspan=1 > 400 m </td></tr>
<tr> <td colspan=1 rowspan=1 > 45.07 (personal best) </td><td colspan=1 rowspan=1 > First place </td><td colspan=1 rowspan=1 > 19 July 2011 </td><td colspan=1 rowspan=1 > Meeting Internazionale di Atletica Sports Solidarity Lignano, Italy </td></tr>
<tr> <td colspan=1 rowspan=1 > 45.44 (seasonal best) </td><td colspan=1 rowspan=1 > 16th in Round 1 (out of 51 athletes) </td><td colspan=1 rowspan=1 > 4 August 2012 </td><td colspan=1 rowspan=1 > 2012 Summer Olympics London, United Kingdom </td></tr>
<tr> <td colspan=1 rowspan=1 > 45.52 </td><td colspan=1 rowspan=1 > Silver </td><td colspan=1 rowspan=1 > 29 June 2012 </td><td colspan=1 rowspan=1 > 2012 African Championships in Athletics Porto-Novo, Benin </td></tr>
<tr> <td colspan=1 rowspan=1 > 46.56 </td><td colspan=1 rowspan=1 > Silver </td><td colspan=1 rowspan=1 > 17 March 2007 </td><td colspan=1 rowspan=1 > 2007 Senior South African National Championships Durban, South Africa </td></tr>
<tr> <td class="highlighted"  colspan=4 rowspan=1 > 4 × 400 m relay </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2 min 59.21 s (heats) </td><td colspan=1 rowspan=1 > Silver </td><td colspan=1 rowspan=1 > 1 September 2011 </td><td colspan=1 rowspan=1 > 2011 IAAF World Championships in Athletics Daegu, South Korea </td></tr>
<tr> <td colspan=1 rowspan=1 > 3 min 04.01 s </td><td colspan=1 rowspan=1 > Silver </td><td colspan=1 rowspan=1 > 1 July 2012 </td><td colspan=1 rowspan=1 > 2012 African Championships in Athletics Porto-Novo, Benin </td></tr>
</table>
Question:
How well did Pistorius perform in the 4x400 Relay and what was his time?
Answer:
In the heats of the 4 × 400 metres relay, Pistorius ran with a time of 2 minutes 59.21 seconds.