There are 5 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 (0, 1)
Distance from target shape to pink right_triangle at (2, 2): 3
Distance from target shape to cyan trapezoid at (2, 0): 3
Distance from target shape to blue trapezoid at (1, 1): 1
Distance from target shape to green trapezoid at (2, 1): 2
Closest shape is the blue trapezoid at (1, 1) with distance 1</think>

<answer>(1, 1)</answer>