There are 6 shapes on a 5x5 grid. Which shape is closest to the gray 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: gray trapezoid at (4, 0)
Distance from target shape to purple right_triangle at (2, 2): 4
Distance from target shape to blue rectangle at (0, 2): 6
Distance from target shape to yellow rectangle at (4, 3): 3
Distance from target shape to green right_triangle at (0, 0): 4
Distance from target shape to brown trapezoid at (1, 0): 3
Closest shape is the yellow rectangle at (4, 3) with distance 3</think>

<answer>(4, 3)</answer>