Table:
all medium-sized firms
become large
remain medium-sized
become small

percent

productivity quartile in year t

first quartile
24.9
13.9
22.1
40.7

second quartile
25.0
16.7
25.4
24.3

third quartile
25.0
30.1
26.1
18.5

fourth quartile
25.1
39.3
26.5
16.5

productivity quartile in year t-5

first quartile
24.9
17.1
23.3
33.9

second quartile
25.0
15.9
25.1
25.6

third quartile
25.0
27.1
25.5
22.3

fourth quartile
25.1
39.9
26.1
18.2

Considerding the provided table image, extract the cells' values in the following postions:
row 12 and column 1,
row 10 and column 1,

Return each cell value as JSON in the format {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}.

The target cell values are as follows:
{"row_id":"12", "column_id":"1", "cell_value":"fourth quartile"}
{"row_id":"10", "column_id":"1", "cell_value":"second quartile"}