There are 6 shapes on a 3x3 grid. Which shape is closest to the red rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: red rectangle at (2, 0)
Distance from target shape to purple rectangle at (2, 2): 2
Distance from target shape to blue right_triangle at (1, 0): 1
Distance from target shape to brown rectangle at (1, 1): 2
Distance from target shape to pink right_triangle at (2, 1): 1
Distance from target shape to orange square at (1, 2): 3
Closest shape is the blue right_triangle at (1, 0) with distance 1</think>

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