There are 4 shapes on a 3x3 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 (2, 1)
Distance from target shape to yellow rectangle at (1, 2): 2
Distance from target shape to gray trapezoid at (2, 0): 1
Distance from target shape to orange right_triangle at (0, 1): 2
Closest shape is the gray trapezoid at (2, 0) with distance 1</think>

<answer>(2, 0)</answer>