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:
Japan in the ABU TV Song Festival
Table title:
Contestants
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Artist </th><th colspan=1 rowspan=1 > Language </th><th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > English translation </th></tr>
<tr> <td colspan=1 rowspan=1 > 2012 </td><td colspan=1 rowspan=1 > Perfume </td><td colspan=1 rowspan=1 > Japanese, English </td><td colspan=1 rowspan=1 > "Spring of Life" </td><td colspan=1 rowspan=1 > – </td></tr>
<tr> <td colspan=1 rowspan=1 > 2013 </td><td colspan=1 rowspan=1 > May'n </td><td colspan=1 rowspan=1 > Japanese </td><td colspan=1 rowspan=1 > "ViViD" </td><td colspan=1 rowspan=1 > – </td></tr>
<tr> <td colspan=1 rowspan=1 > 2014 </td><td colspan=1 rowspan=1 > Sekai no Owari (世界の終わり) </td><td colspan=1 rowspan=1 > Japanese </td><td colspan=1 rowspan=1 > "Dragon Night" </td><td colspan=1 rowspan=1 > – </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2015 </td><td class="highlighted"  colspan=1 rowspan=1 > Scandal </td><td class="highlighted"  colspan=1 rowspan=1 > Japanese </td><td class="highlighted"  colspan=1 rowspan=1 > Sisters </td><td colspan=1 rowspan=1 > – </td></tr>
<tr> <td colspan=1 rowspan=1 > 2016 </td><td colspan=1 rowspan=1 > Kyary Pamyu Pamyu </td><td colspan=1 rowspan=1 > Japanese </td><td colspan=1 rowspan=1 > Fashion Monster & Sai & Co </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2017 </td><td colspan=1 rowspan=1 > LiSA </td><td colspan=1 rowspan=1 > Japanese </td><td colspan=1 rowspan=1 > Catch The Moment </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2018 </td><td colspan=1 rowspan=1 > Eir Aoi </td><td colspan=1 rowspan=1 > Japanese </td><td colspan=1 rowspan=1 > Ignite </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
What role did the artist Scandal play in 2015?
Answer:
In 2015, Scandal represented Japan with "Sisters" in the ABU TV Song Festival.