Table:
Vaisakhi, Baisakhi
Punjabi: ਵਿਸਾਖੀ
Also called	Baisakh, Vaisakh
Observed by	Sikhs, Hindus
Type	religious, cultural
Significance	Solar New Year, Harvest festival, birth of the Khalsa, Punjabi new year
Celebrations	Parades and Nagar Kirtan, Fairs, Amrit Sanchaar (baptism) for new Khalsa
Observances	Prayers, processions, raising of the Nishan Sahib flag, Fairs.
2018 date	Sat, 14 April
2019 date	Sun, 14 April
2020 date	Mon, 13 April

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':(X1, Y1), 'bottom-right':(X2, Y2)}, where (X1, Y1) and (X2, Y2) 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 region is: {'top-left':(1, 1), 'bottom-right':(1, 2)}.