Table:
Athlete	Event	Heat	Semifinal	Final

Result	Rank	Result	Rank	Result	Rank

Rose Lokonyen	800 m	2:16.64	7	Did not advance

Anjelina Lohalith	1500 m	4:47.38	14	Did not advance

This image shows a table. Tell me the row number and column number of this table. The final result should be presented in the JSON format of {"row_number": "m", "column_number": "n"}.

There are 4 rows and 8 columns in the table. So, the final answer is {"row_number": "4", "column_number": "8"}.