There are 5 shapes on a 6x6 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, 3)
Distance from target shape to cyan trapezoid at (5, 0): 4
Distance from target shape to red square at (4, 2): 1
Distance from target shape to blue rectangle at (0, 4): 5
Distance from target shape to purple trapezoid at (5, 1): 3
Closest shape is the red square at (4, 2) with distance 1</think>

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