Table:
Rank
Name
Nationality
Time
Notes

Joanne Malar
Canada
4:43.64

Alison Fealey
United States
4:48.31

Jenny Kurth
United States
4:57.24

4
Sonia Fonseca
Puerto Rico
5:03.15

5
Fabíola Molina
Brazil
5:03.43

6
Isabel Rojas
Colombia
5:11.58

7
Carolyn Adel
Suriname
5:13.24

8
Edith Arraspide
Argentina
5:13.95

Please ascertain the quantity of rows and columns within the provided table. Format your final answer as a JSON, using the structure {"row_number": "m", "column_number": "n"}.

This table has 9 rows and 4 columns. Thus, the final answer is {"row_number": "9", "column_number": "4"}.