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:
Lee Si-young
Table title:
Athletic Awards
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Award </th><th colspan=1 rowspan=1 > Category </th><th colspan=1 rowspan=1 > Result </th></tr>
<tr> <td colspan=1 rowspan=2 > 2010 </td><td colspan=1 rowspan=1 > 7th Annual Women's Amateur Boxing Competition </td><td colspan=1 rowspan=1 > N/A </td><td colspan=1 rowspan=1 > Won </td></tr>
<tr> <td colspan=1 rowspan=1 > 10th KBI National Lifestyle Athletics Boxing Championship </td><td colspan=1 rowspan=1 > women's 50-kg </td><td colspan=1 rowspan=1 > Won </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 2011 </td><td class="highlighted"  colspan=1 rowspan=1 > 47th Seoul Amateur Boxing Match </td><td class="highlighted"  colspan=1 rowspan=1 > women's 48-kg </td><td class="highlighted"  colspan=1 rowspan=1 > Won </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 7th National Amateur Boxing Championships </td><td class="highlighted"  colspan=1 rowspan=1 > Referee Stopped Contest </td><td class="highlighted"  colspan=1 rowspan=1 > Won </td></tr>
<tr> <td colspan=1 rowspan=3 > 2012 </td><td colspan=1 rowspan=1 > 42nd Seoul Boxing Prematch Amateur Boxing Federation </td><td colspan=1 rowspan=2 > women's 48-kg </td><td colspan=1 rowspan=1 > Won </td></tr>
<tr> <td colspan=1 rowspan=1 > 33rd Presidents cup Amateur Boxing Contest </td><td colspan=1 rowspan=1 > Won </td></tr>
<tr> <td colspan=1 rowspan=1 > National Amateur Boxing Championships </td><td colspan=1 rowspan=1 > women's under 48-kg light flyweight </td><td colspan=1 rowspan=1 > final round </td></tr>
<tr> <td colspan=1 rowspan=1 > 2013 </td><td colspan=1 rowspan=1 > 24th National Amateur Boxing Championships </td><td colspan=1 rowspan=1 > women's 48-kg </td><td colspan=1 rowspan=1 > Won </td></tr>
</table>
Question:
How did Lee Si-young perform in the 47th Seoul Amateur and the 7th National Amateur Boxing matches in 2011?
Answer:
In 2011, Lee Si-young won the women's 48-kg category in the 47th Seoul Amateur Boxing Match and the Referee Stopped Contest in the 7th National Amateur Boxing Championships.