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:
Kerstin Preßler
Table title:
Achievements
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> <th colspan=6 rowspan=1 > Representing West Germany </th></tr>
<tr> <td colspan=1 rowspan=1 > 1986 </td><td colspan=1 rowspan=1 > European Championships </td><td colspan=1 rowspan=1 > Stuttgart, West Germany </td><td colspan=1 rowspan=1 > 20th </td><td colspan=1 rowspan=1 > 10,000 m </td><td colspan=1 rowspan=1 > 33:03.63 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 1987 </td><td class="highlighted"  colspan=1 rowspan=1 > Berlin Marathon </td><td colspan=1 rowspan=1 > Berlin, West Germany </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:31:22 </td></tr>
<tr> <td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Rome, Italy </td><td colspan=1 rowspan=1 > 10th </td><td colspan=1 rowspan=1 > 10,000 m </td><td colspan=1 rowspan=1 > 31:56.80 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1988 </td><td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > Seoul, South Korea </td><td colspan=1 rowspan=1 > 21st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:34:26 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 1990 </td><td class="highlighted"  colspan=1 rowspan=1 > Frankfurt Marathon </td><td colspan=1 rowspan=1 > Frankfurt, Germany </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:34:13 </td></tr>
<tr> <td colspan=1 rowspan=1 > European Championships </td><td colspan=1 rowspan=1 > Split, Yugoslavia </td><td colspan=1 rowspan=1 > 11th </td><td colspan=1 rowspan=1 > 10,000 m </td><td colspan=1 rowspan=1 > 32:42.96 </td></tr>
</table>
Question:
What marathons has Kerstin Preßler and what years did she win them?
Answer:
Kerstin Preßler won the 1987 edition of the Berlin Marathon and the 1990 Frankfurt Marathon.