There are 4 shapes on a 5x5 grid. Which shape is closest to the blue trapezoid in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: blue trapezoid at (3, 3)
Distance from target shape to pink rectangle at (4, 0): 4
Distance from target shape to green rectangle at (0, 4): 4
Distance from target shape to purple right_triangle at (2, 2): 2
Closest shape is the purple right_triangle at (2, 2) with distance 2</think>

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