Table:
sector
import participation rate
export participation rate

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

percent

manufacturing
30.64
28.56
20.04
14.76

wholesale trade
31.54
32.88
10.42
10.58

Analyze the provided table and extract the contents of cells located at the specified positions, identified by row and column indices. Show the cell value in the JSON format {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}.
Positions:
the 2nd row and the 3rd column
the 1st row and the 1st column

The extracted cell contents are listed below.
{"row_id":"2", "column_id":"3", "cell_value":"immigrant-owned firms"}
{"row_id":"1", "column_id":"1", "cell_value":"sector"}