There are 3 shapes on a 8x8 grid. Which shape is closest to the brown rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: brown rectangle at (7, 4)
Distance from target shape to green square at (2, 6): 7
Distance from target shape to blue square at (0, 3): 8
Closest shape is the green square at (2, 6) with distance 7</think>

<answer>(2, 6)</answer>