Table:
province
canadians whose household has a working:

smoke detector
carbon monoxide detector
fire extinguisher

percent

newfoundland and labrador
99
42
84

prince edward island
98
42
75

nova scotia
97
43
71

new brunswick
98
35
72

quebec
98
34
67

ontario
99
80
64

manitoba
97
60
63

saskatchewan
98
66
63

alberta
96
65
65

british columbia
95
52
69

total
98
60
66

Examine the table in this image and extract any merged cell areas. Please format the merged cell areas as JSON {'top-left':(A, B), 'bottom-right':(C, D)}, with (A, B) indicating the (row_id, column_id) of the top-left cell and (C, D) the bottom-right cell in the merged regions. Remember that the A, B, C, D all start from 1.

The merged cell areas are as follows:
{'top-left':(1, 1), 'bottom-right':(3, 1)}
{'top-left':(1, 2), 'bottom-right':(1, 4)}
{'top-left':(3, 2), 'bottom-right':(3, 4)}.