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 (0, 4)
Distance from target shape to brown trapezoid at (4, 6): 6
Closest shape is the brown trapezoid at (4, 6) with distance 6</think>

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