Table:
Month	Waiting time (minutes)

March	43

April	27

May	21

June	48

July	49

Based on the table image, extract the value of the cell located in the subsequent postion:
the 7th row and the 1st column

Output the target cell content as JSON in the format {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}.

The target cell value in the 7th row and the 1st column is {"row_id":"7", "column_id":"1", "cell_value":"July"}.