There are 6 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 (2, 1)
Distance from target shape to purple square at (0, 4): 5
Distance from target shape to pink trapezoid at (5, 4): 6
Distance from target shape to blue rectangle at (3, 0): 2
Distance from target shape to orange square at (0, 2): 3
Distance from target shape to yellow square at (4, 1): 2
Closest shape is the blue rectangle at (3, 0) with distance 2</think>

<answer>(3, 0)</answer>