There are 5 shapes on a 3x3 grid. Which shape is closest to the purple 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: purple trapezoid at (2, 0)
Distance from target shape to brown square at (1, 2): 3
Distance from target shape to gray rectangle at (1, 0): 1
Distance from target shape to cyan rectangle at (2, 1): 1
Distance from target shape to red right_triangle at (0, 2): 4
Closest shape is the gray rectangle at (1, 0) with distance 1</think>

<answer>(1, 0)</answer>