Table:
garnet ring	$917

emerald pendant	$746

opal ring	$854

topaz bracelet	$823

Please determine the total count of rows and columns in the provided table, respectively. Show your final answer in the JSON format {"row_number": "m", "column_number": "n"}.

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