Table:
Year
Competition
Venue
Position
Event
Notes

1952

South American Championships

Buenos Aires, Argentina

3rd

5000 m

15:09.0

1953

South American Championships (unofficial)

Santiago, Chile

2nd

1500 m

4:00.4

1955

Pan American Games

Mexico City, Mexico

5th

800 m

1:53.31

1st

1500 m

3:53.30 GR

Give you some cell positions and a table image, extract the corresponding cell values in these positions:
row 3 and column 4
row 3 and column 2
row 4 and column 3
row 3 and column 5
row 3 and column 6
row 5 and column 5

The value of every target cell should be presented in the JSON format of {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}, e.g., {"row_id":"10", "column_id":"3", "cell_value":"District"}.

The extracted cell contents are listed below.
{"row_id":"3", "column_id":"4", "cell_value":"2nd"}
{"row_id":"3", "column_id":"2", "cell_value":"South American Championships (unofficial)"}
{"row_id":"4", "column_id":"3", "cell_value":"Mexico City, Mexico"}
{"row_id":"3", "column_id":"5", "cell_value":"1500 m"}
{"row_id":"3", "column_id":"6", "cell_value":"4:00.4"}
{"row_id":"5", "column_id":"5", "cell_value":"1500 m"}