There are 4 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 (0, 7)
Distance from target shape to purple trapezoid at (3, 3): 7
Distance from target shape to brown square at (7, 4): 10
Distance from target shape to green right_triangle at (4, 5): 6
Closest shape is the green right_triangle at (4, 5) with distance 6</think>

<answer>(4, 5)</answer>