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:
Nordic Cup (rugby league)
Table title:
Results
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Season </th><th colspan=1 rowspan=1 > Winner </th><th colspan=1 rowspan=1 > 2nd </th><th colspan=1 rowspan=1 > 3rd </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2011 </td><td class="highlighted"  colspan=1 rowspan=1 > Denmark </td><td class="highlighted"  colspan=1 rowspan=1 > Norway </td><td class="highlighted"  colspan=1 rowspan=1 > Sweden </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2012 </td><td colspan=1 rowspan=1 > Norway </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Sweden </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2013 </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Norway </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2014 </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Norway </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2015 </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Norway </td><td colspan=1 rowspan=1 > Sweden </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2016 </td><td colspan=1 rowspan=1 > Norway </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Sweden </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2017 </td><td colspan=1 rowspan=1 > Norway </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Denmark </td></tr>
</table>
Question:
What is the Nordic Cup and who is a part of it?
Answer:
The Nordic Cup is a rugby league tournament played annually between Denmark, Norway and Sweden.