There are 6 shapes on a 5x5 grid. Which shape is closest to the yellow 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: yellow square at (3, 4)
Distance from target shape to red right_triangle at (0, 4): 3
Distance from target shape to brown right_triangle at (1, 3): 3
Distance from target shape to gray square at (2, 1): 4
Distance from target shape to cyan rectangle at (0, 3): 4
Distance from target shape to orange square at (4, 3): 2
Closest shape is the orange square at (4, 3) with distance 2</think>

<answer>(4, 3)</answer>