There are 5 shapes on a 5x5 grid. Which shape is closest to the brown trapezoid 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 trapezoid at (0, 0)
Distance from target shape to cyan trapezoid at (4, 3): 7
Distance from target shape to gray trapezoid at (3, 1): 4
Distance from target shape to pink rectangle at (4, 4): 8
Distance from target shape to red rectangle at (2, 3): 5
Closest shape is the gray trapezoid at (3, 1) with distance 4</think>

<answer>(3, 1)</answer>