There are 5 shapes on a 8x8 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 (2, 1)
Distance from target shape to green trapezoid at (1, 2): 2
Distance from target shape to red square at (4, 6): 7
Distance from target shape to pink square at (7, 2): 6
Distance from target shape to purple trapezoid at (3, 2): 2
Closest shape is the green trapezoid at (1, 2) with distance 2</think>

<answer>(1, 2)</answer>