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:
Oleku (Ice Prince song)
Table title:
Accolades
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Awards ceremony </th><th colspan=1 rowspan=1 > Award description(s) </th><th colspan=1 rowspan=1 > Results </th></tr>
<tr> <td colspan=1 rowspan=1 > 2010 </td><td colspan=1 rowspan=1 > Dynamix All Youth Awards </td><td colspan=1 rowspan=2 > Song of the Year </td><td colspan=1 rowspan=1 > Nominated </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=9 > 2011 </td><td colspan=1 rowspan=1 > City People Entertainment Awards </td><td colspan=1 rowspan=1 > Won </td></tr>
<tr> <td colspan=1 rowspan=1 > Nigeria Entertainment Awards </td><td colspan=1 rowspan=1 > Hottest Single Of The Year </td><td colspan=1 rowspan=1 > Won </td></tr>
<tr> <td colspan=1 rowspan=1 > Nigeria Music Video Awards (NMVA) </td><td colspan=1 rowspan=1 > Best Contemporary Afro Video </td><td colspan=1 rowspan=1 > Nominated </td></tr>
<tr> <td colspan=1 rowspan=1 > Channel O Music Video Awards </td><td colspan=1 rowspan=1 > Most Gifted Newcomer Video </td><td colspan=1 rowspan=1 > Won </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=5 > The Headies </td><td class="highlighted"  colspan=1 rowspan=1 > Best Rap Single </td><td class="highlighted"  colspan=1 rowspan=1 > Won </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Song of the Year </td><td class="highlighted"  colspan=1 rowspan=1 > Won </td></tr>
<tr> <td colspan=1 rowspan=1 > Best Collabo </td><td colspan=1 rowspan=1 > Nominated </td></tr>
<tr> <td colspan=1 rowspan=1 > Next Rated (Ice Prince for "Oleku") </td><td colspan=1 rowspan=1 > Nominated </td></tr>
<tr> <td colspan=1 rowspan=1 > Lyricist on the Roll (Ice Prince for "Oleku") </td><td colspan=1 rowspan=1 > Nominated </td></tr>
</table>
Question:
At which 2011 award ceremony did the song "Oleku" win the Song of the Year and Best Rap Single award?
Answer:
"Oleku" won Song of the Year and Best Rap Single at The Headies 2011.