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:
Winnie Ng
Table title:
International competitions
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Competition </th><th colspan=1 rowspan=1 > Venue </th><th colspan=1 rowspan=1 > Position </th><th colspan=1 rowspan=1 > Event </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 1983 </td><td colspan=1 rowspan=1 > World Women's Road Race Championships </td><td colspan=1 rowspan=1 > San Diego, California </td><td colspan=1 rowspan=1 > 43rd </td><td colspan=1 rowspan=1 > 10K </td><td colspan=1 rowspan=1 > 35:24 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1984 </td><td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > Los Angeles, California </td><td colspan=1 rowspan=1 > 31st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:42:38 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1985 </td><td colspan=1 rowspan=1 > World Marathon Cup </td><td colspan=1 rowspan=1 > Hiroshima, Italy </td><td colspan=1 rowspan=1 > 54th </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:54:42 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1989 </td><td colspan=1 rowspan=1 > World Marathon Cup </td><td colspan=1 rowspan=1 > Milan, Italy </td><td colspan=1 rowspan=1 > 47th </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:55:04 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1993 </td><td class="highlighted"  colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Stuttgart, Germany </td><td class="highlighted"  colspan=1 rowspan=1 > 23rd </td><td class="highlighted"  colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:58:41 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1994 </td><td colspan=1 rowspan=1 > World Half Marathon Championships </td><td colspan=1 rowspan=1 > Oslo, Norway </td><td colspan=1 rowspan=1 > 77th </td><td colspan=1 rowspan=1 > Half marathon </td><td colspan=1 rowspan=1 > 1:17:37 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1995 </td><td class="highlighted"  colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Gothenburg, Sweden </td><td class="highlighted"  colspan=1 rowspan=1 > 30th </td><td class="highlighted"  colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 3:01:08 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2000 </td><td colspan=1 rowspan=1 > Asian Marathon Championships </td><td colspan=1 rowspan=1 > Pattaya, Thailand </td><td colspan=1 rowspan=1 > 3rd </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 3:09:43 </td></tr>
</table>
Question:
How did Winnie Ng perform at the World Championships?
Answer:
At the World Championships, Winnie Ng participated twice in the marathon finishing 23rd in 1993 and 30th in 1995.