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:
The Who 2010 performances
Table title:
Performance dates
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > City </th><th colspan=1 rowspan=1 > Country </th><th colspan=1 rowspan=1 > Venue </th></tr>
<tr> <th colspan=4 rowspan=1 > Acoustic Super Bowl promotional appearance </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 4 February 2010 </td><td colspan=1 rowspan=1 > Fort Lauderdale, Florida </td><td colspan=1 rowspan=1 > United States </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th class="highlighted"  colspan=4 rowspan=1 > Super Bowl XLIV halftime show </th></tr>
<tr> <td colspan=1 rowspan=1 > 7 February 2010 </td><td colspan=1 rowspan=1 > Miami Gardens, Florida </td><td colspan=1 rowspan=1 > United States </td><td colspan=1 rowspan=1 > Sun Life Stadium </td></tr>
<tr> <th colspan=4 rowspan=1 > London Teenage Cancer Trust Concert </th></tr>
<tr> <td colspan=1 rowspan=1 > 30 March 2010 </td><td colspan=1 rowspan=1 > London </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Royal Albert Hall </td></tr>
<tr> <th colspan=4 rowspan=1 > FIFA Kick-off Celebration Concert </th></tr>
<tr> <td colspan=1 rowspan=1 > 10 June 2010 </td><td colspan=1 rowspan=1 > Soweto </td><td colspan=1 rowspan=1 > South Africa </td><td colspan=1 rowspan=1 > Orlando Stadium </td></tr>
</table>
Question:
Who performed the halftime show at Superbowl XLIV?
Answer:
The Who did four major performances in 2010: the halftime act for Super Bowl XLIV, the Teenage Cancer Trust concert in London, and the FIFA Kick-off Celebration Concert at Orlando Stadium in Soweto, South Africa.