Table:
activities
participation rate
average time spent

excellent or very good
good
fair or poor
excellent or very good
good
fair or poor

percent
hours

doing unpaid household work
89
87
84
3.4
3.2
2.9

engaging in civic, religious and organizational activities
10
9
5
2.3
1.9
2.1

socializing and communicating
45
41
37
2.3
2.2
2.4

engaging in leisure and physical activities
45
39
36
2.2
2.1
2.3

using technology
32
27
25
1.9
2.0
2.3

watching television and videos
82
88
85
3.7
4.2
4.9

reading
42
37
32
2.0
2.0
2.0

sleeping
100
100
100
8.9
9.1
9.5

Given a table image, please tell me which table cells are merged cells. Return the merged cell areas 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 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, 4)}
{'top-left':(3, 5), 'bottom-right':(3, 7)}.