There are 2 shapes on a 10x10 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 (9, 1)
Distance from target shape to pink trapezoid at (0, 4): 12
Closest shape is the pink trapezoid at (0, 4) with distance 12</think>

<answer>(0, 4)</answer>