There are 6 shapes on a 10x10 grid. Which shape is closest to the gray 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: gray trapezoid at (4, 1)
Distance from target shape to blue trapezoid at (4, 2): 1
Distance from target shape to pink rectangle at (1, 2): 4
Distance from target shape to brown trapezoid at (2, 5): 6
Distance from target shape to cyan rectangle at (0, 7): 10
Distance from target shape to purple right_triangle at (6, 2): 3
Closest shape is the blue trapezoid at (4, 2) with distance 1</think>

<answer>(4, 2)</answer>