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:
César Cielo
Table title:
Long course (50 meter pool)
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Event </th><th colspan=1 rowspan=1 > Time </th><th colspan=1 rowspan=1 > Location </th><th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 50 m freestyle </td><td colspan=1 rowspan=1 > 20.91 </td><td colspan=1 rowspan=1 > São Paulo </td><td colspan=1 rowspan=1 > December 18, 2009 </td><td colspan=1 rowspan=1 > WR </td></tr>
<tr> <td colspan=1 rowspan=1 > 100 m freestyle </td><td colspan=1 rowspan=1 > 46.91 </td><td colspan=1 rowspan=1 > Rome </td><td colspan=1 rowspan=1 > July 30, 2009 </td><td colspan=1 rowspan=1 > WR </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 50 m butterfly </td><td class="highlighted"  colspan=1 rowspan=1 > 22.76 </td><td colspan=1 rowspan=1 > Rio de Janeiro </td><td colspan=1 rowspan=1 > April 26, 2012 </td><td colspan=1 rowspan=1 > AM </td></tr>
<tr> <td colspan=1 rowspan=1 > 4×50 m freestyle </td><td colspan=1 rowspan=1 > 1:26.12 </td><td colspan=1 rowspan=1 > São Paulo </td><td colspan=1 rowspan=1 > December 19, 2009 </td><td colspan=1 rowspan=1 > SA </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 × 100 m freestyle </td><td colspan=1 rowspan=1 > 3:10.34 </td><td colspan=1 rowspan=1 > Budapest </td><td colspan=1 rowspan=1 > July 23, 2017 </td><td colspan=1 rowspan=1 > SA </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 × 100 m medley </td><td colspan=1 rowspan=1 > 3:29.16 </td><td colspan=1 rowspan=1 > Rome </td><td colspan=1 rowspan=1 > August 2, 2009 </td><td colspan=1 rowspan=1 > SA </td></tr>
</table>
Question:
What did César Cielo achieve in 50m butterfly?
Answer:
On April 26, 2012, César Cielo achieved the Americas record in the 50-metre butterfly, with a time of 22.76 seconds in Rio de Janeiro.