There are 3 shapes on a 3x3 grid. Which shape is closest to the pink 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: pink trapezoid at (2, 2)
Distance from target shape to blue square at (2, 1): 1
Distance from target shape to yellow right_triangle at (2, 0): 2
Closest shape is the blue square at (2, 1) with distance 1</think>

<answer>(2, 1)</answer>