There are 6 shapes on a 9x9 grid. Which shape is closest to the blue 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: blue trapezoid at (6, 1)
Distance from target shape to purple rectangle at (4, 5): 6
Distance from target shape to red rectangle at (6, 8): 7
Distance from target shape to orange trapezoid at (2, 6): 9
Distance from target shape to yellow trapezoid at (1, 0): 6
Distance from target shape to pink rectangle at (5, 3): 3
Closest shape is the pink rectangle at (5, 3) with distance 3</think>

<answer>(5, 3)</answer>