There are 4 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 (0, 0)
Distance from target shape to cyan square at (2, 0): 2
Distance from target shape to orange trapezoid at (0, 1): 1
Distance from target shape to green trapezoid at (1, 2): 3
Closest shape is the orange trapezoid at (0, 1) with distance 1</think>

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