There are 6 shapes on a 9x9 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, 4)
Distance from target shape to yellow square at (2, 8): 4
Distance from target shape to pink square at (4, 7): 5
Distance from target shape to purple right_triangle at (0, 4): 2
Distance from target shape to cyan rectangle at (6, 0): 8
Distance from target shape to brown trapezoid at (1, 4): 1
Closest shape is the brown trapezoid at (1, 4) with distance 1</think>

<answer>(1, 4)</answer>