There are 6 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 (2, 1)
Distance from target shape to yellow square at (2, 4): 3
Distance from target shape to purple right_triangle at (1, 3): 3
Distance from target shape to cyan trapezoid at (3, 1): 1
Distance from target shape to green square at (9, 4): 10
Distance from target shape to blue square at (0, 1): 2
Closest shape is the cyan trapezoid at (3, 1) with distance 1</think>

<answer>(3, 1)</answer>