There are 3 shapes on a 7x7 grid. Which shape is closest to the purple 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: purple square at (2, 5)
Distance from target shape to orange trapezoid at (3, 2): 4
Distance from target shape to pink right_triangle at (0, 3): 4
Closest shape is the orange trapezoid at (3, 2) with distance 4</think>

<answer>(3, 2)</answer>