Table:
December 31

2019	2 0 1 8

U.S. $ in thousands

Operating loss carryforward	73,260	57,768

Net deferred tax asset before valuation allowance	19,911	15,916

Valuation allowance	(19,911)	(15,916)

Net deferred tax asset	795	772

What are the cells' value in the following positions in the table? Output each cell content as JSON in the format {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}.
the 4th row and the 1st column,
the 7th row and the 2nd column,

The extracted cell contents are listed below.
{"row_id":"4", "column_id":"1", "cell_value":"Operating loss carryforward"}
{"row_id":"7", "column_id":"2", "cell_value":"795"}