There are 4 shapes on a 8x8 grid. Which shape is closest to the orange rectangle 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 rectangle at (0, 1)
Distance from target shape to blue right_triangle at (0, 5): 4
Distance from target shape to purple trapezoid at (2, 6): 7
Distance from target shape to gray right_triangle at (6, 4): 9
Closest shape is the blue right_triangle at (0, 5) with distance 4</think>

<answer>(0, 5)</answer>