There are 6 shapes on a 9x9 grid. Which shape is closest to the yellow trapezoid 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 trapezoid at (6, 5)
Distance from target shape to brown right_triangle at (2, 4): 5
Distance from target shape to blue trapezoid at (8, 7): 4
Distance from target shape to gray rectangle at (6, 3): 2
Distance from target shape to purple rectangle at (7, 3): 3
Distance from target shape to pink right_triangle at (1, 5): 5
Closest shape is the gray rectangle at (6, 3) with distance 2</think>

<answer>(6, 3)</answer>