There are 5 shapes on a 9x9 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, 6)
Distance from target shape to gray trapezoid at (7, 2): 10
Distance from target shape to orange trapezoid at (4, 2): 7
Distance from target shape to brown right_triangle at (4, 3): 6
Distance from target shape to cyan rectangle at (2, 3): 4
Closest shape is the cyan rectangle at (2, 3) with distance 4</think>

<answer>(2, 3)</answer>