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

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