There are 4 shapes on a 8x8 grid. Which shape is closest to the gray 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: gray square at (2, 6)
Distance from target shape to pink square at (7, 0): 11
Distance from target shape to cyan square at (2, 7): 1
Distance from target shape to red square at (7, 6): 5
Closest shape is the cyan square at (2, 7) with distance 1</think>

<answer>(2, 7)</answer>