There are 6 shapes on a 8x8 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 (4, 4)
Distance from target shape to gray trapezoid at (4, 2): 2
Distance from target shape to cyan right_triangle at (3, 6): 3
Distance from target shape to purple trapezoid at (5, 0): 5
Distance from target shape to red right_triangle at (3, 0): 5
Distance from target shape to pink rectangle at (4, 0): 4
Closest shape is the gray trapezoid at (4, 2) with distance 2</think>

<answer>(4, 2)</answer>