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:
Wildlife of Kerala
Table title:
Reptiles
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Biosphere Reserve </th><th colspan=1 rowspan=1 > Area (km2) </th><th colspan=1 rowspan=1 > Year started </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Nilgiri Biosphere Reserve </td><td class="highlighted"  colspan=1 rowspan=1 > 1455.4 </td><td colspan=1 rowspan=1 > 1986 </td></tr>
<tr> <td colspan=1 rowspan=1 > Agasthyamalai Biosphere Reserve </td><td colspan=1 rowspan=1 > 1701 </td><td colspan=1 rowspan=1 > 2002 </td></tr>
</table>
Question:
How large is the Nilgiri Biosphere Reserve?
Answer:
The Wildlife of Kerala has an area of 1455.4 km² in the Nilgiri Biosphere Reserve.