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

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