Table:
test site
wastewater treatment plants
2018 population

central halifax
3
0.2

montreal island
1
2.0

toronto city
4
2.8

edmonton city
1
1.0

vancouver metro area
5
2.5

total
14
8.4

the 2nd row and the 3rd column
Extract the content of cell in the above position, identified by row and column indices. Return the cell value as JSON in the format {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}.

The target cell value in the 2nd row and the 3rd column is {"row_id":"2", "column_id":"3", "cell_value":"0.2"}.