Table:
spiral snail shell	$0.01

scallop shell	$0.03

polished silver top shell	$0.02

oyster shell	$0.06

pink and white striped shell	$0.04

row 4 and column 1
row 1 and column 1
row 3 and column 2
row 4 and column 2
row 2 and column 1
row 2 and column 2
Extract the contents of cells in the above positions, identified by row and column indices. Return each cell value as JSON in the format {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}.

The extracted cell contents are listed below.
{"row_id":"4", "column_id":"1", "cell_value":"oyster shell"}
{"row_id":"1", "column_id":"1", "cell_value":"spiral snail shell"}
{"row_id":"3", "column_id":"2", "cell_value":"$0.02"}
{"row_id":"4", "column_id":"2", "cell_value":"$0.06"}
{"row_id":"2", "column_id":"1", "cell_value":"scallop shell"}
{"row_id":"2", "column_id":"2", "cell_value":"$0.03"}