There are 5 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 (5, 0)
Distance from target shape to gray trapezoid at (6, 0): 1
Distance from target shape to yellow trapezoid at (2, 1): 4
Distance from target shape to cyan rectangle at (5, 3): 3
Distance from target shape to pink square at (3, 3): 5
Closest shape is the gray trapezoid at (6, 0) with distance 1</think>

<answer>(6, 0)</answer>