Table:
duck key chain	$0.52

puppy key chain	$0.78

frog key chain	$0.98

football helmet key chain	$0.86

Could you count the number of rows and columns in this table? Return the result as JSON in the format {"row_number": "m", "column_number": "n"}, e.g., {"row_number": "12", "column_number": "7"}.

This table has 4 rows and 2 columns. Thus, the final answer is {"row_number": "4", "column_number": "2"}.