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:
Lalu Muhammad Zohri
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 class="highlighted"  colspan=1 rowspan=4 > 2018 </td><td colspan=1 rowspan=1 > Asian Junior Championships </td><td colspan=1 rowspan=1 > Gifu, Japan </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 100 m </td><td colspan=1 rowspan=1 > 10.27 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > World U20 Championships </td><td colspan=1 rowspan=1 > Tampere, Finland </td><td colspan=1 rowspan=1 > 1st </td><td class="highlighted"  colspan=1 rowspan=1 > 100 m </td><td colspan=1 rowspan=1 > 10.18 </td></tr>
<tr> <td colspan=1 rowspan=2 > Asian Games </td><td colspan=1 rowspan=2 > Jakarta, Indonesia </td><td colspan=1 rowspan=1 > 7th </td><td colspan=1 rowspan=1 > 100 m </td><td colspan=1 rowspan=1 > 10.20 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 4 × 100 m relay </td><td colspan=1 rowspan=1 > 38.77 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2019 </td><td colspan=1 rowspan=1 > Malaysia Open </td><td colspan=1 rowspan=1 > Kuala Lumpur, Malaysia </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 100 m </td><td colspan=1 rowspan=1 > 10.20 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2019 </td><td colspan=1 rowspan=1 > Asian Championships </td><td colspan=1 rowspan=1 > Doha, Qatar </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 100 m </td><td colspan=1 rowspan=1 > 10.13 </td></tr>
</table>
Question:
When and in which event did Zohri win gold at the World U20 Championships?
Answer:
Zohri competed at the 2018 World U20 Championships in the 100 m.