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:
List of earthquakes in 1971
Table title:
By death toll
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Rank </th><th colspan=1 rowspan=1 > Death toll </th><th colspan=1 rowspan=1 > Magnitude </th><th colspan=1 rowspan=1 > Location </th><th colspan=1 rowspan=1 > MMI </th><th colspan=1 rowspan=1 > Depth (km) </th><th colspan=1 rowspan=1 > Date </th></tr>
<tr> <td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 1,000 </td><td colspan=1 rowspan=1 > 6.9 </td><td colspan=1 rowspan=1 > Turkey Bingol Province, Turkey </td><td colspan=1 rowspan=1 > VIII (Severe) </td><td colspan=1 rowspan=1 > 10.0 </td><td colspan=1 rowspan=1 > May 22 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > 100 </td><td class="highlighted"  colspan=1 rowspan=1 > 6.2 </td><td class="highlighted"  colspan=1 rowspan=1 > Turkey Burdur Province, Turkey </td><td colspan=1 rowspan=1 > V (Moderate) </td><td class="highlighted"  colspan=1 rowspan=1 > 22.5 </td><td class="highlighted"  colspan=1 rowspan=1 > May 12 </td></tr>
<tr> <td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > 83 </td><td colspan=1 rowspan=1 > 7.8 </td><td colspan=1 rowspan=1 > Chile Valparaiso Region, Chile </td><td colspan=1 rowspan=1 > VI (Strong) </td><td colspan=1 rowspan=1 > 60.3 </td><td colspan=1 rowspan=1 > July 9 </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > 65 </td><td colspan=1 rowspan=1 > 6.6 </td><td colspan=1 rowspan=1 > United States San Fernando Valley, California </td><td colspan=1 rowspan=1 > IX (Violent) </td><td colspan=1 rowspan=1 > 9.0 </td><td colspan=1 rowspan=1 > February 9 </td></tr>
<tr> <td colspan=1 rowspan=1 > 5 </td><td colspan=1 rowspan=1 > 24 </td><td colspan=1 rowspan=1 > 4.6 </td><td colspan=1 rowspan=1 > Italy Lazio, Italy </td><td colspan=1 rowspan=1 > VIII (Severe) </td><td colspan=1 rowspan=1 > 33.0 </td><td colspan=1 rowspan=1 > February 6 </td></tr>
</table>
Question:
What's the most severe earthquake in 1971?
Answer:
A 6.9 magnitude earthquake struck Burdur Province, Turkey on May 22 at a depth of 10.0 km, causing 1000 casualties.