There are 4 shapes on a 8x8 grid. Which shape is closest to the pink 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: pink trapezoid at (7, 6)
Distance from target shape to brown square at (3, 2): 8
Distance from target shape to blue square at (6, 5): 2
Distance from target shape to purple square at (6, 0): 7
Closest shape is the blue square at (6, 5) with distance 2</think>

<answer>(6, 5)</answer>