There are 5 shapes on a 10x10 grid. Which shape is closest to the cyan 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: cyan square at (8, 1)
Distance from target shape to orange rectangle at (1, 9): 15
Distance from target shape to pink square at (9, 4): 4
Distance from target shape to blue trapezoid at (2, 8): 13
Distance from target shape to brown square at (3, 9): 13
Closest shape is the pink square at (9, 4) with distance 4</think>

<answer>(9, 4)</answer>