Table:
Athlete	Event	Heat	Quarterfinal	Semifinal	Final

Result	Rank	Result	Rank	Result	Rank	Result	Rank

Churandy Martina	100 m	10.23	3 Q	10.24	7	Did not advance

Geronimo Goeloe	200 m	21.09	7	Did not advance

Given a table image, please tell me which table cells are merged cells. Return the merged cell regions in the JSON format of {'top-left':(R1, C1), 'bottom-right':(R2, C2)}, where (R1, C1) and (R2, C2) represent the (row_id, column_id) coordinates of top-left cell and bottom-right cell, respectively. The row_id and column_id are numberd from 1.

The merged cell regions are as follows:
{'top-left':(1, 1), 'bottom-right':(2, 1)}
{'top-left':(1, 2), 'bottom-right':(2, 2)}
{'top-left':(1, 3), 'bottom-right':(1, 4)}
{'top-left':(1, 5), 'bottom-right':(1, 6)}
{'top-left':(1, 7), 'bottom-right':(1, 8)}
{'top-left':(1, 9), 'bottom-right':(1, 10)}
{'top-left':(3, 7), 'bottom-right':(3, 10)}
{'top-left':(4, 5), 'bottom-right':(4, 10)}.