There are 4 shapes on a 8x8 grid. Which shape is closest to the yellow 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: yellow square at (5, 7)
Distance from target shape to purple rectangle at (4, 1): 7
Distance from target shape to cyan square at (4, 6): 2
Distance from target shape to brown square at (0, 7): 5
Closest shape is the cyan square at (4, 6) with distance 2</think>

<answer>(4, 6)</answer>