There are 4 shapes on a 10x10 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 (3, 0)
Distance from target shape to brown rectangle at (7, 0): 4
Distance from target shape to green square at (7, 4): 8
Distance from target shape to red right_triangle at (0, 0): 3
Closest shape is the red right_triangle at (0, 0) with distance 3</think>

<answer>(0, 0)</answer>