There are 4 shapes on a 3x3 grid. Which shape is closest to the yellow right_triangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: yellow right_triangle at (2, 0)
Distance from target shape to purple trapezoid at (1, 0): 1
Distance from target shape to cyan rectangle at (1, 2): 3
Distance from target shape to pink right_triangle at (2, 2): 2
Closest shape is the purple trapezoid at (1, 0) with distance 1</think>

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