There are 3 shapes on a 9x9 grid. Which shape is closest to the blue 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: blue right_triangle at (0, 5)
Distance from target shape to orange rectangle at (1, 4): 2
Distance from target shape to brown trapezoid at (4, 7): 6
Closest shape is the orange rectangle at (1, 4) with distance 2</think>

<answer>(1, 4)</answer>