Table:
Chōjū-jinbutsu-giga

Animals wrestling on the first scroll of Chōjū-jinbutsu-giga.

Material	Paper and ink.
Created	12th century and 13th century
Discovered	Scrolls were known since created.
Present location	Tokyo National Museum
Kyoto National Museum

row 2 and column 1,
row 4 and column 2,
Extract the contents of cells in the above positions, identified by row and column indices. Provide the value of all target cells in the JSON structure, using the format {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}.

The extracted cell contents are listed below.
{"row_id":"2", "column_id":"1", "cell_value":"Material"}
{"row_id":"4", "column_id":"2", "cell_value":"Scrolls were known since created."}