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 (3, 7)
Distance from target shape to orange square at (4, 3): 5
Distance from target shape to red trapezoid at (7, 1): 10
Distance from target shape to purple rectangle at (6, 1): 9
Distance from target shape to pink rectangle at (4, 4): 4
Distance from target shape to green square at (7, 6): 5
Closest shape is the pink rectangle at (4, 4) with distance 4</think>

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