Table:
sector
imports
exports

all firms
immigrant-owned firms
canadian-owned firms
all firms
immigrant-owned firms
canadian-owned firms

percent

agriculture, forestry, fishing and hunting
1.05
1.25
1.03
4.10
2.39
4.38

mining, oil and gas extraction, and utilities
0.44
0.55
0.43
0.95
1.74
0.82

construction
2.14
1.06
2.27
1.90
0.61
2.11

manufacturing
25.99
20.30
26.67
55.34
39.33
57.91

wholesale trade
51.18
60.45
50.06
21.06
39.74
18.05

retail trade
10.72
8.84
10.94
1.53
5.98
0.81

transportation and warehousing
2.05
1.50
2.12
2.59
2.60
2.59

professional services
5.05
4.52
5.12
11.80
6.91
12.58

education and health services
0.13
0.19
0.12
0.06
0.12
0.05

arts, entertainment and recreation, and accommodation and food services
0.30
0.37
0.29
0.22
0.27
0.21

other services
0.96
0.97
0.95
0.45
0.32
0.47

Return the merged cell areas in the provided table image. Your answer should be in the JSON format of {'top-left':(X, Y), 'bottom-right':(Z, W)}, where (X, Y) and (Z, W) represent the (row_id, column_id) coordinates of top-left cell and bottom-right cell, respectively. Note that row_id and column_id start from 1 instead of 0.

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':(1, 5), 'bottom-right':(1, 7)}
{'top-left':(3, 2), 'bottom-right':(3, 7)}.