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:
Killing Heidi
Table title:
ARIA Awards
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Nominee/work </th><th colspan=1 rowspan=1 > Award </th><th colspan=1 rowspan=1 > Result </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=7 > 2000 </td><td class="highlighted"  colspan=1 rowspan=5 > Reflector </td><td class="highlighted"  colspan=1 rowspan=1 > Album of the Year </td><td class="highlighted"  colspan=1 rowspan=1 > Won </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Best Group </td><td class="highlighted"  colspan=1 rowspan=1 > Won </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Best Rock Album </td><td class="highlighted"  colspan=1 rowspan=1 > Won </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Breakthrough Artist – Album </td><td class="highlighted"  colspan=1 rowspan=1 > Won </td></tr>
<tr> <td colspan=1 rowspan=1 > Highest Selling Album </td><td class="highlighted"  colspan=1 rowspan=1 > Nominated </td></tr>
<tr> <td colspan=1 rowspan=1 > Paul Kosky – Reflector </td><td colspan=1 rowspan=1 > Best Cover Art </td><td class="highlighted"  colspan=1 rowspan=1 > Nominated </td></tr>
<tr> <td colspan=1 rowspan=1 > "Mascara" </td><td colspan=1 rowspan=1 > Single of the Year </td><td class="highlighted"  colspan=1 rowspan=1 > Nominated </td></tr>
<tr> <td colspan=1 rowspan=2 > 2001 </td><td colspan=1 rowspan=1 > "Superman Supergirl" </td><td colspan=1 rowspan=1 > Best Group </td><td colspan=1 rowspan=1 > Nominated </td></tr>
<tr> <td colspan=1 rowspan=1 > Paul Kosky – "Superman Supergirl" </td><td colspan=1 rowspan=1 > Producer of the Year </td><td colspan=1 rowspan=1 > Nominated </td></tr>
<tr> <td colspan=1 rowspan=1 > 2002 </td><td colspan=1 rowspan=1 > "Heavensent" </td><td colspan=1 rowspan=1 > Best Independent Release </td><td colspan=1 rowspan=1 > Nominated </td></tr>
</table>
Question:
How many categories did Killing Heidi win at the 2000 ARIA Music Awards?
Answer:
At the ARIA Music Awards of 2000, Killing Heidi received seven nominations and won four categories: Album of the Year, Best Group, Breakthrough Artist – Album and Best Rock Album for Reflector.