There are 4 shapes on a 10x10 grid. Which shape is closest to the yellow square 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 square at (2, 9)
Distance from target shape to purple right_triangle at (9, 8): 8
Distance from target shape to pink rectangle at (9, 5): 11
Distance from target shape to brown trapezoid at (5, 6): 6
Closest shape is the brown trapezoid at (5, 6) with distance 6</think>

<answer>(5, 6)</answer>