There are 6 shapes on a 5x5 grid. Which shape is closest to the gray 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: gray rectangle at (3, 2)
Distance from target shape to cyan trapezoid at (1, 4): 4
Distance from target shape to pink trapezoid at (4, 2): 1
Distance from target shape to yellow right_triangle at (4, 4): 3
Distance from target shape to red rectangle at (1, 2): 2
Distance from target shape to brown right_triangle at (3, 4): 2
Closest shape is the pink trapezoid at (4, 2) with distance 1</think>

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