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:
LaShawn Merritt
Table title:
Achievements
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Competition </th><th colspan=1 rowspan=1 > Venue </th><th colspan=1 rowspan=1 > Position </th><th colspan=1 rowspan=1 > Event </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=3 > 2004 </td><td colspan=1 rowspan=3 > World Junior Championships </td><td colspan=1 rowspan=3 > Grosseto, Italy </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > 45.25 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 100 m relay </td><td colspan=1 rowspan=1 > 38.66 WJR </td></tr>
<tr> <td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 3:01.09 WJR </td></tr>
<tr> <td colspan=1 rowspan=1 > 2005 </td><td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Helsinki, Finland </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 3:00.48 (heats) </td></tr>
<tr> <td colspan=1 rowspan=4 > 2006 </td><td colspan=1 rowspan=1 > World Indoor Championships </td><td colspan=1 rowspan=1 > Moscow, Russia </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 3:03.24 </td></tr>
<tr> <td colspan=1 rowspan=1 > World Athletics Final </td><td colspan=1 rowspan=1 > Stuttgart, Germany </td><td colspan=1 rowspan=1 > 3rd </td><td colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > 44.14 </td></tr>
<tr> <td colspan=1 rowspan=2 > World Cup </td><td colspan=1 rowspan=2 > Athens, Greece </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > 44.54 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 3:00.11 </td></tr>
<tr> <td colspan=1 rowspan=3 > 2007 </td><td colspan=1 rowspan=2 > World Championships </td><td colspan=1 rowspan=2 > Osaka, Japan </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > 43.96 PB </td></tr>
<tr> <td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 2:55.56 </td></tr>
<tr> <td colspan=1 rowspan=1 > World Athletics Final </td><td colspan=1 rowspan=1 > Stuttgart, Germany </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > 44.58 </td></tr>
<tr> <td colspan=1 rowspan=2 > 2008 </td><td colspan=1 rowspan=2 > Olympic Games </td><td colspan=1 rowspan=2 > Beijing, China </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > 43.75 PB </td></tr>
<tr> <td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 2:55.39 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=3 > 2009 </td><td class="highlighted"  colspan=1 rowspan=2 > World Championships </td><td colspan=1 rowspan=2 > Berlin, Germany </td><td colspan=1 rowspan=1 > 1st </td><td class="highlighted"  colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > 44.06 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 2:57.86 </td></tr>
<tr> <td colspan=1 rowspan=1 > World Athletics Final </td><td colspan=1 rowspan=1 > Thessaloniki, Greece </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > 44.93 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 2011 </td><td class="highlighted"  colspan=1 rowspan=2 > World Championships </td><td class="highlighted"  colspan=1 rowspan=2 > Daegu, South Korea </td><td colspan=1 rowspan=1 > 2nd </td><td class="highlighted"  colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > 44.63 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 2:59.31 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2012 </td><td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > London, United Kingdom </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > DNF </td></tr>
<tr> <td colspan=1 rowspan=2 > 2013 </td><td colspan=1 rowspan=2 > World Championships </td><td colspan=1 rowspan=2 > Moscow, Russia </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > 43.74 PB </td></tr>
<tr> <td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 2:58.71 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2014 </td><td colspan=1 rowspan=1 > IAAF World Relays </td><td colspan=1 rowspan=1 > Nassau, Bahamas </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 2:57.25 </td></tr>
<tr> <td colspan=1 rowspan=3 > 2015 </td><td colspan=1 rowspan=1 > IAAF World Relays </td><td colspan=1 rowspan=1 > Nassau, Bahamas </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 2:58.43 </td></tr>
<tr> <td colspan=1 rowspan=2 > World Championships </td><td colspan=1 rowspan=2 > Beijing, China </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > 43.65 PB </td></tr>
<tr> <td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 2:57.82 </td></tr>
<tr> <td colspan=1 rowspan=2 > 2016 </td><td colspan=1 rowspan=2 > Olympic Games </td><td colspan=1 rowspan=2 > Rio de Janeiro, Brazil </td><td colspan=1 rowspan=1 > 3rd </td><td colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > 43.85 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 2:57.30 </td></tr>
<tr> <td colspan=1 rowspan=2 > 2017 </td><td colspan=1 rowspan=1 > IAAF World Relays </td><td colspan=1 rowspan=1 > Nassau, Bahamas </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 4 × 400 m relay </td><td colspan=1 rowspan=1 > 3:02.13 </td></tr>
<tr> <td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > London, United Kingdom </td><td colspan=1 rowspan=1 > 20th (sf) </td><td colspan=1 rowspan=1 > 400 m </td><td colspan=1 rowspan=1 > 45.52 </td></tr>
</table>
Question:
who participated in the 2011 world championships in Daegu?
Answer:
LaShawn Merritt participated in the 2011 World Championships in Daegu, South Korea and in the 2009 World Champion for the 400 meters.