There are 3 shapes on a 10x10 grid. Which shape is closest to the blue 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: blue square at (5, 6)
Distance from target shape to green rectangle at (2, 4): 5
Distance from target shape to cyan rectangle at (8, 5): 4
Closest shape is the cyan rectangle at (8, 5) with distance 4</think>

<answer>(8, 5)</answer>