There are 5 shapes on a 3x3 grid. Which shape is closest to the orange 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: orange right_triangle at (1, 2)
Distance from target shape to green rectangle at (2, 2): 1
Distance from target shape to blue square at (2, 1): 2
Distance from target shape to gray right_triangle at (1, 0): 2
Distance from target shape to cyan square at (2, 0): 3
Closest shape is the green rectangle at (2, 2) with distance 1</think>

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