There are 5 shapes on a 5x5 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 (0, 2)
Distance from target shape to blue rectangle at (3, 0): 5
Distance from target shape to purple right_triangle at (2, 3): 3
Distance from target shape to cyan trapezoid at (2, 0): 4
Distance from target shape to yellow square at (1, 4): 3
Closest shape is the purple right_triangle at (2, 3) with distance 3</think>

<answer>(2, 3)</answer>