There are 3 shapes on a 10x10 grid. Which shape is closest to the yellow 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: yellow right_triangle at (9, 4)
Distance from target shape to blue trapezoid at (0, 8): 13
Distance from target shape to brown trapezoid at (9, 7): 3
Closest shape is the brown trapezoid at (9, 7) with distance 3</think>

<answer>(9, 7)</answer>