There are 5 shapes on a 10x10 grid. Which shape is closest to the red 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: red square at (1, 2)
Distance from target shape to pink rectangle at (2, 4): 3
Distance from target shape to orange square at (8, 6): 11
Distance from target shape to cyan square at (1, 9): 7
Distance from target shape to gray trapezoid at (4, 1): 4
Closest shape is the pink rectangle at (2, 4) with distance 3</think>

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