There are 6 shapes on a 10x10 grid. Which shape is closest to the pink square 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 square at (1, 5)
Distance from target shape to red right_triangle at (0, 9): 5
Distance from target shape to cyan right_triangle at (8, 6): 8
Distance from target shape to gray rectangle at (9, 5): 8
Distance from target shape to green square at (4, 5): 3
Distance from target shape to yellow trapezoid at (0, 5): 1
Closest shape is the yellow trapezoid at (0, 5) with distance 1</think>

<answer>(0, 5)</answer>