Table:
Judith and the Head of Holofernes

Artist	Gustav Klimt
Year	1901
Medium	Oil on canvas
Dimensions	84 cm × 42 cm (33 in × 17 in)
Location	Österreichische Galerie Belvedere, Vienna

For the cell positioned in row 4 and column 2 of this table, provide its content. The target cell value should be presented in the JSON format of {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}, e.g., {"row_id":"10", "column_id":"3", "cell_value":"District"}.

The target cell value in row 4 and column 2 is {"row_id":"4", "column_id":"2", "cell_value":"Oil on canvas"}.