Table:
Adrianna Costa

Born	(1981-06-26) June 26, 1981 (age 43)

Tell me how many rows and columns exist in the given table. Format your final answer as a JSON, using the structure {"row_number": "m", "column_number": "n"}.

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