There are 5 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 (1, 0)
Distance from target shape to red rectangle at (5, 3): 7
Distance from target shape to orange square at (4, 0): 3
Distance from target shape to yellow trapezoid at (3, 5): 7
Distance from target shape to cyan rectangle at (4, 4): 7
Closest shape is the orange square at (4, 0) with distance 3</think>

<answer>(4, 0)</answer>