There are 2 shapes on a 4x4 grid. Which shape is closest to the brown rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: brown rectangle at (3, 2)
Distance from target shape to green right_triangle at (0, 3): 4
Closest shape is the green right_triangle at (0, 3) with distance 4</think>

<answer>(0, 3)</answer>