Table:
Stem	Leaf

2	1, 2, 3

3	1

4	0, 1, 6, 6, 7, 7

5	0, 1, 2, 3, 7

6	1, 7, 8, 8

This image shows a table. Return the contents of cells at the indicated positions in the table. Positions are identified 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>"}.
Specified positions:
the 5th row and the 1st column
the 2nd row and the 1st column
the 2nd row and the 2nd column

The extracted cell contents are listed below.
{"row_id":"5", "column_id":"1", "cell_value":"4"}
{"row_id":"2", "column_id":"1", "cell_value":"Stem"}
{"row_id":"2", "column_id":"2", "cell_value":"Leaf "}