There are 5 shapes on a 6x6 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 (1, 3)
Distance from target shape to yellow rectangle at (4, 3): 3
Distance from target shape to purple rectangle at (1, 1): 2
Distance from target shape to pink rectangle at (0, 3): 1
Distance from target shape to blue trapezoid at (3, 3): 2
Closest shape is the pink rectangle at (0, 3) with distance 1</think>

<answer>(0, 3)</answer>