Table:
Year Ended December 31,

2019	2018	2017

Adjusted EBITDA:

Net income	$53,330	$21,524	$29,251

Adjustments:

Interest expense, interest income and other income, net	(8,483)	503	1,133

Provision for / (benefit from) income taxes	5,566	(9,825)	2,990

Amortization and depreciation expense	22,134	21,721	17,734

Stock-based compensation expense	20,603	13,429	7,413

Acquisition-related expense	2,403	—	5,895

Litigation expense	12,754	45,729	7,212

Total adjustments	54,977	71,557	42,377

Adjusted EBITDA	$108,307	$93,081	$71,628

This image displays a table. Could you provide me with the row number and column number corresponding to this table? Output the final answer in the JSON format {"row_number": "m", "column_number": "n"}. For instance, if the table has 5 rows and 4 columns, the answer would be {"row_number": "5", "column_number": "4"}

There are 13 rows and 4 columns in the table. So, the final answer is {"row_number": "13", "column_number": "4"}.