There are 6 shapes on a 6x6 grid. Which shape is closest to the blue 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: blue rectangle at (2, 5)
Distance from target shape to purple square at (3, 5): 1
Distance from target shape to pink rectangle at (0, 4): 3
Distance from target shape to cyan square at (2, 3): 2
Distance from target shape to yellow trapezoid at (5, 2): 6
Distance from target shape to brown square at (0, 1): 6
Closest shape is the purple square at (3, 5) with distance 1</think>

<answer>(3, 5)</answer>