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

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