There are 6 shapes on a 4x4 grid. Which shape is closest to the brown 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: brown trapezoid at (2, 0)
Distance from target shape to blue right_triangle at (1, 3): 4
Distance from target shape to yellow rectangle at (3, 2): 3
Distance from target shape to gray rectangle at (1, 1): 2
Distance from target shape to purple square at (1, 0): 1
Distance from target shape to orange right_triangle at (2, 2): 2
Closest shape is the purple square at (1, 0) with distance 1</think>

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