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:
Kaya Forson
Table title:
Competition record
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> <th colspan=6 rowspan=1 > Representing Ghana </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 2015 </td><td class="highlighted"  colspan=1 rowspan=2 > World Championships </td><td class="highlighted"  colspan=1 rowspan=2 > Kazan, Russia </td><td colspan=1 rowspan=1 > 61st </td><td class="highlighted"  colspan=1 rowspan=1 > 200m freestyle </td><td colspan=1 rowspan=1 > 2:23.72 </td></tr>
<tr> <td colspan=1 rowspan=1 > 44th </td><td class="highlighted"  colspan=1 rowspan=1 > 200m backstroke </td><td colspan=1 rowspan=1 > 2:43.94 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2016 </td><td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > Rio de Janeiro, Brazil </td><td colspan=1 rowspan=1 > 42nd </td><td colspan=1 rowspan=1 > 200m freestyle </td><td colspan=1 rowspan=1 > 2:16.02 </td></tr>
</table>
Question:
What competitions did Kaya Forson compete in at the 2015 World Championships in Kazan, Russia?
Answer:
Kaya Forson competed in the 200 metre freestyle and 200 metre backstroke at the 2015 World Championships in Kazan, Russia.