There are 5 shapes on a 10x10 grid. Which shape is closest to the purple rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: purple rectangle at (2, 2)
Distance from target shape to pink square at (7, 6): 9
Distance from target shape to green trapezoid at (4, 9): 9
Distance from target shape to orange rectangle at (7, 4): 7
Distance from target shape to red right_triangle at (7, 8): 11
Closest shape is the orange rectangle at (7, 4) with distance 7</think>

<answer>(7, 4)</answer>