Table:
highest certificate, diploma or degree
female lone parents
female parent in couples

1991
2001
2011
difference
1991
2001
2011
difference

percent

total
100
100
100
..
100
100
100
..

no certificate, diploma or degree
34
20
13
-21
24
13
8
-16

high school diploma or equivalency
30
28
25
-5
32
28
21
-11

postsecondary certificate below the bachelor's level
26
39
42
16
29
36
38
9

university degree at the bachelor's level or above
9
13
20
11
15
23
33
18

Based on the provided table, please extract the cells' values located at the specified positions, as denoted by row and column indices. Output each cell content as JSON in the format {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}.
Positions:
row 7 and column 3,
row 4 and column 8,

The extracted cell contents are listed below.
{"row_id":"7", "column_id":"3", "cell_value":"39"}
{"row_id":"4", "column_id":"8", "cell_value":"100"}