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

<answer>(5, 2)</answer>