There are 5 shapes on a 8x8 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 (0, 4)
Distance from target shape to yellow right_triangle at (6, 1): 9
Distance from target shape to pink rectangle at (0, 0): 4
Distance from target shape to cyan square at (5, 4): 5
Distance from target shape to gray rectangle at (2, 2): 4
Closest shape is the pink rectangle at (0, 0) with distance 4</think>

<answer>(0, 0)</answer>