There are 5 shapes on a 10x10 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 (3, 6)
Distance from target shape to yellow right_triangle at (4, 4): 3
Distance from target shape to green trapezoid at (0, 9): 6
Distance from target shape to red rectangle at (3, 4): 2
Distance from target shape to purple square at (8, 9): 8
Closest shape is the red rectangle at (3, 4) with distance 2</think>

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