There are 3 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 (4, 4)
Distance from target shape to purple rectangle at (5, 3): 2
Distance from target shape to blue trapezoid at (4, 2): 2
Closest shape is the purple rectangle at (5, 3) with distance 2</think>

<answer>(5, 3)</answer>