There are 4 shapes on a 7x7 grid. Which shape is closest to the orange 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: orange rectangle at (5, 5)
Distance from target shape to yellow square at (2, 6): 4
Distance from target shape to green square at (2, 3): 5
Distance from target shape to gray rectangle at (2, 0): 8
Closest shape is the yellow square at (2, 6) with distance 4</think>

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