There are 4 shapes on a 10x10 grid. Which shape is closest to the pink rectangle 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 rectangle at (2, 6)
Distance from target shape to green right_triangle at (6, 9): 7
Distance from target shape to gray trapezoid at (1, 9): 4
Distance from target shape to brown right_triangle at (5, 0): 9
Closest shape is the gray trapezoid at (1, 9) with distance 4</think>

<answer>(1, 9)</answer>