Table:
Xenia Stad-de Jong

Medal record

Women's athletics

Representing the Netherlands

Olympic Games

1948 London
4x100 m relay

European Championships

1950 Brussels
4×100 m relay

Here's what I need you to do:
In the image of this table, identify all the merged cells. Provide the coordinates of these merged regions in the JSON {'top-left':(x, y), 'bottom-right':(m, n)}, with '(x, y)' and '(m, n)' indicating the (row_id, column_id) of the top-left and bottom-right cells, respectively. Remember, row and column numbering starts at 1.

The merged cell region is: {'top-left':(1, 1), 'bottom-right':(1, 2)}.