There are 6 shapes on a 9x9 grid. Which shape is closest to the blue trapezoid 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 trapezoid at (1, 3)
Distance from target shape to orange rectangle at (7, 4): 7
Distance from target shape to purple square at (7, 6): 9
Distance from target shape to cyan trapezoid at (8, 2): 8
Distance from target shape to red trapezoid at (8, 0): 10
Distance from target shape to brown trapezoid at (2, 6): 4
Closest shape is the brown trapezoid at (2, 6) with distance 4</think>

<answer>(2, 6)</answer>