There are 6 shapes on a 5x5 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 (0, 0)
Distance from target shape to orange trapezoid at (2, 3): 5
Distance from target shape to purple rectangle at (0, 4): 4
Distance from target shape to brown right_triangle at (3, 2): 5
Distance from target shape to gray rectangle at (1, 3): 4
Distance from target shape to cyan rectangle at (4, 1): 5
Closest shape is the purple rectangle at (0, 4) with distance 4</think>

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