There are 6 shapes on a 7x7 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 (6, 5)
Distance from target shape to green right_triangle at (4, 4): 3
Distance from target shape to brown trapezoid at (3, 0): 8
Distance from target shape to blue right_triangle at (1, 0): 10
Distance from target shape to pink trapezoid at (3, 4): 4
Distance from target shape to purple square at (6, 3): 2
Closest shape is the purple square at (6, 3) with distance 2</think>

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