There are 4 shapes on a 5x5 grid. Which shape is closest to the cyan 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: cyan square at (1, 1)
Distance from target shape to yellow right_triangle at (4, 4): 6
Distance from target shape to purple square at (4, 0): 4
Distance from target shape to gray trapezoid at (2, 4): 4
Closest shape is the purple square at (4, 0) with distance 4</think>

<answer>(4, 0)</answer>