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

This is a table picture. Can you figure out the row and column numbers for this particular table? Return the result as JSON in the format {"row_number": "m", "column_number": "n"}, e.g., {"row_number": "12", "column_number": "7"}.

There are 4 rows and 3 columns in the table. So, the final answer is {"row_number": "4", "column_number": "3"}.