There are 3 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 (1, 0)
Distance from target shape to red rectangle at (2, 1): 2
Distance from target shape to green square at (7, 0): 6
Closest shape is the red rectangle at (2, 1) with distance 2</think>

<answer>(2, 1)</answer>