Table:
Year ended December 31,

2017	2018	Change

Amounts in thousands of U.S. dollars

Net cash provided by operating activities	$223,630	$283,710	$60,080

Net cash used in investing activities	(74,599)	(692,999)	(618,400)

Net cash provided by financing activities	7,265	368,120	360,855

This is a table picture. Can you figure out the row and column numbers for this particular table? Show your final answer in the JSON format {"row_number": "m", "column_number": "n"}.

There are 6 rows and 4 columns in the table. So, the final answer is {"row_number": "6", "column_number": "4"}.