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:
Dardenne brothers
Table title:
Cannes Film Festival
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Nominated work </th><th colspan=1 rowspan=1 > Category </th><th colspan=1 rowspan=1 > Result </th></tr>
<tr> <td colspan=1 rowspan=2 > 1999 </td><td colspan=1 rowspan=2 > Rosetta </td><td colspan=1 rowspan=1 > Palme d'Or </td><td colspan=1 rowspan=1 > Won </td></tr>
<tr> <td colspan=1 rowspan=1 > Prize of the Ecumenical Jury </td><td colspan=1 rowspan=1 > Special Mention </td></tr>
<tr> <td colspan=1 rowspan=2 > 2002 </td><td colspan=1 rowspan=2 > The Son </td><td colspan=1 rowspan=1 > Palme d'Or </td><td colspan=1 rowspan=1 > Nominated </td></tr>
<tr> <td colspan=1 rowspan=1 > Prize of the Ecumenical Jury </td><td colspan=1 rowspan=1 > Special Mention </td></tr>
<tr> <td colspan=1 rowspan=1 > 2005 </td><td colspan=1 rowspan=1 > L'Enfant </td><td colspan=1 rowspan=1 > Palme d'Or </td><td colspan=1 rowspan=1 > Won </td></tr>
<tr> <td colspan=1 rowspan=2 > 2008 </td><td colspan=1 rowspan=2 > Lorna's Silence </td><td colspan=1 rowspan=1 > Palme d'Or </td><td colspan=1 rowspan=1 > Nominated </td></tr>
<tr> <td colspan=1 rowspan=1 > Best Screenplay </td><td colspan=1 rowspan=1 > Won </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 2011 </td><td class="highlighted"  colspan=1 rowspan=2 > The Kid with a Bike </td><td colspan=1 rowspan=1 > Palme d'Or </td><td colspan=1 rowspan=1 > Nominated </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Grand Prix </td><td class="highlighted"  colspan=1 rowspan=1 > Won </td></tr>
<tr> <td colspan=1 rowspan=2 > 2014 </td><td colspan=1 rowspan=2 > Two Days, One Night </td><td colspan=1 rowspan=1 > Palme d'Or </td><td colspan=1 rowspan=1 > Nominated </td></tr>
<tr> <td colspan=1 rowspan=1 > Prize of the Ecumenical Jury </td><td colspan=1 rowspan=1 > Special Prize </td></tr>
<tr> <td colspan=1 rowspan=1 > 2016 </td><td colspan=1 rowspan=1 > The Unknown Girl </td><td colspan=1 rowspan=1 > Palme d'Or </td><td colspan=1 rowspan=1 > Nominated </td></tr>
</table>
Question:
Which Dardenne brothers’ film won a Grand Prix at the 2011 Cannes Film Festival?
Answer:
The Dardenne brothers' film The Kid with a Bike won the Grand Prix at the 2011 Cannes Film Festival.