There are 4 shapes on a 9x9 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 (2, 4)
Distance from target shape to cyan rectangle at (2, 3): 1
Distance from target shape to brown right_triangle at (6, 2): 6
Distance from target shape to gray rectangle at (4, 2): 4
Closest shape is the cyan rectangle at (2, 3) with distance 1</think>

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