There are 5 shapes on a 8x8 grid. Which shape is closest to the orange 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: orange trapezoid at (6, 2)
Distance from target shape to red square at (3, 4): 5
Distance from target shape to cyan right_triangle at (3, 5): 6
Distance from target shape to blue rectangle at (4, 6): 6
Distance from target shape to purple square at (5, 3): 2
Closest shape is the purple square at (5, 3) with distance 2</think>

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