There are 5 shapes on a 9x9 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 (0, 1)
Distance from target shape to gray trapezoid at (4, 5): 8
Distance from target shape to cyan rectangle at (0, 7): 6
Distance from target shape to brown right_triangle at (1, 2): 2
Distance from target shape to green trapezoid at (3, 2): 4
Closest shape is the brown right_triangle at (1, 2) with distance 2</think>

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