There are 3 shapes on a 5x5 grid. Which shape is closest to the red 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: red square at (2, 1)
Distance from target shape to cyan square at (1, 1): 1
Distance from target shape to pink square at (4, 2): 3
Closest shape is the cyan square at (1, 1) with distance 1</think>

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