There are 3 shapes on a 10x10 grid. Which shape is closest to the blue 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: blue rectangle at (1, 2)
Distance from target shape to pink trapezoid at (7, 7): 11
Distance from target shape to red right_triangle at (9, 7): 13
Closest shape is the pink trapezoid at (7, 7) with distance 11</think>

<answer>(7, 7)</answer>