There are 6 shapes on a 8x8 grid. Which shape is closest to the red 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: red trapezoid at (7, 2)
Distance from target shape to orange right_triangle at (7, 4): 2
Distance from target shape to purple right_triangle at (1, 2): 6
Distance from target shape to pink trapezoid at (4, 4): 5
Distance from target shape to blue right_triangle at (0, 5): 10
Distance from target shape to green rectangle at (6, 5): 4
Closest shape is the orange right_triangle at (7, 4) with distance 2</think>

<answer>(7, 4)</answer>