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:
NER Class W
Table title:

Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > NER No. </th><th colspan=1 rowspan=1 > Works No. </th><th colspan=1 rowspan=1 > Date built </th><th colspan=1 rowspan=1 > Date rebuilt </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 686 </td><td colspan=1 rowspan=1 > 84 </td><td colspan=1 rowspan=1 > December 1907 </td><td colspan=1 rowspan=1 > May 1915 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 687 </td><td colspan=1 rowspan=1 > 85 </td><td colspan=1 rowspan=1 > December 1907 </td><td colspan=1 rowspan=1 > January 1917 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 688 </td><td colspan=1 rowspan=1 > 86 </td><td colspan=1 rowspan=1 > December 1907 </td><td colspan=1 rowspan=1 > September 1914 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 689 </td><td colspan=1 rowspan=1 > 87 </td><td colspan=1 rowspan=1 > January 1908 </td><td colspan=1 rowspan=1 > May 1915 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 690 </td><td colspan=1 rowspan=1 > 88 </td><td colspan=1 rowspan=1 > February 1908 </td><td colspan=1 rowspan=1 > August 1916 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 691 </td><td colspan=1 rowspan=1 > 89 </td><td colspan=1 rowspan=1 > March 1908 </td><td colspan=1 rowspan=1 > June 1915 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 692 </td><td colspan=1 rowspan=1 > 90 </td><td colspan=1 rowspan=1 > March 1908 </td><td colspan=1 rowspan=1 > May 1916 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 693 </td><td colspan=1 rowspan=1 > 91 </td><td colspan=1 rowspan=1 > March 1908 </td><td colspan=1 rowspan=1 > February 1916 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 694 </td><td colspan=1 rowspan=1 > 92 </td><td colspan=1 rowspan=1 > April 1908 </td><td colspan=1 rowspan=1 > May 1915 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 695 </td><td colspan=1 rowspan=1 > 93 </td><td colspan=1 rowspan=1 > April 1908 </td><td colspan=1 rowspan=1 > July 1915 </td></tr>
</table>
Question:
What NER number did Class W have?
Answer:
NER Class W were numbered from 686 to 695.