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:
2012 in Konfrontacja Sztuk Walki events
Table title:
List of events
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > # </th><th colspan=1 rowspan=1 > Event Title </th><th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Arena </th><th colspan=1 rowspan=1 > Location </th></tr>
<tr> <td colspan=1 rowspan=1 > 1 </td><td class="highlighted"  colspan=1 rowspan=1 > KSW 18: Unfinished Sympathy </td><td class="highlighted"  colspan=1 rowspan=1 > February 25, 2012 </td><td class="highlighted"  colspan=1 rowspan=1 > Orlen Arena </td><td class="highlighted"  colspan=1 rowspan=1 > Poland Płock, Poland </td></tr>
<tr> <td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > KSW 19: Pudzianowski vs. Sapp </td><td colspan=1 rowspan=1 > May 12, 2012 </td><td colspan=1 rowspan=1 > Arena Łódź </td><td colspan=1 rowspan=1 > Poland Łódź, Poland </td></tr>
<tr> <td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > KSW 20: Fighting Symphonies </td><td colspan=1 rowspan=1 > September 15, 2012 </td><td colspan=1 rowspan=1 > Ergo Arena </td><td colspan=1 rowspan=1 > Poland Gdańsk, Poland </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > KSW 21: Ultimate Explanation </td><td colspan=1 rowspan=1 > December 1, 2012 </td><td colspan=1 rowspan=1 > Hala Torwar </td><td colspan=1 rowspan=1 > Poland Warsaw, Poland </td></tr>
</table>
Question:
Were any KSW events in 2012 not held in arenas?
Answer:
KSW 21: Ultimate Explanation was held in Hala Torwar in Warsaw, Poland.