There are 4 shapes on a 6x6 grid. Which shape is closest to the pink 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: pink trapezoid at (3, 4)
Distance from target shape to purple right_triangle at (0, 2): 5
Distance from target shape to green trapezoid at (1, 0): 6
Distance from target shape to gray rectangle at (4, 2): 3
Closest shape is the gray rectangle at (4, 2) with distance 3</think>

<answer>(4, 2)</answer>