Table:
£m	2019	2018

Up to three months	29.9	32.1

Three to six months	10.0	3.7

Trade receivables	39.9	35.8

row 1 and column 3,
row 3 and column 1,
Extract the contents of cells in the above positions, 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>"}.

The extracted cell contents are listed below.
{"row_id":"1", "column_id":"3", "cell_value":"2018"}
{"row_id":"3", "column_id":"1", "cell_value":"Three to six months"}