There are 6 shapes on a 9x9 grid. Which shape is closest to the gray 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: gray trapezoid at (6, 0)
Distance from target shape to blue rectangle at (8, 8): 10
Distance from target shape to yellow trapezoid at (3, 7): 10
Distance from target shape to red trapezoid at (4, 3): 5
Distance from target shape to purple rectangle at (0, 0): 6
Distance from target shape to orange right_triangle at (1, 2): 7
Closest shape is the red trapezoid at (4, 3) with distance 5</think>

<answer>(4, 3)</answer>