Table:
Masks made	Frequency

1	6

2	5

3	3

4	13

5	8

Could you calculate the row number and column number in this table? Format your final answer as a JSON, using the structure {"row_number": "m", "column_number": "n"}.

This table has 7 rows and 2 columns. Thus, the final answer is {"row_number": "7", "column_number": "2"}.