There are 6 shapes on a 7x7 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 purple rectangle at (2, 4): 6
Distance from target shape to red square at (2, 5): 7
Distance from target shape to orange rectangle at (4, 5): 9
Distance from target shape to pink right_triangle at (0, 3): 3
Distance from target shape to green rectangle at (4, 3): 7
Closest shape is the pink right_triangle at (0, 3) with distance 3</think>

<answer>(0, 3)</answer>