There are 6 shapes on a 9x9 grid. Which shape is closest to the orange 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: orange square at (8, 0)
Distance from target shape to brown square at (4, 1): 5
Distance from target shape to yellow rectangle at (5, 1): 4
Distance from target shape to cyan trapezoid at (4, 8): 12
Distance from target shape to green right_triangle at (6, 5): 7
Distance from target shape to gray trapezoid at (0, 3): 11
Closest shape is the yellow rectangle at (5, 1) with distance 4</think>

<answer>(5, 1)</answer>