Table:
old white van	$4,970

red two-door coupe	$5,978

black convertible	$6,968

big blue van	$9,166

Could you count the number of rows and columns in this table? Present the final answer in a JSON format {"row_number": "m", "column_number": "n"} such as {"row_number": "2", "column_number": "3"}.

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