There are 6 shapes on a 6x6 grid. Which shape is closest to the orange square 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 square at (4, 5)
Distance from target shape to blue rectangle at (1, 3): 5
Distance from target shape to red rectangle at (1, 0): 8
Distance from target shape to pink square at (4, 0): 5
Distance from target shape to cyan rectangle at (1, 5): 3
Distance from target shape to purple rectangle at (5, 2): 4
Closest shape is the cyan rectangle at (1, 5) with distance 3</think>

<answer>(1, 5)</answer>