There are 4 shapes on a 8x8 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 (7, 5)
Distance from target shape to brown square at (4, 3): 5
Distance from target shape to green rectangle at (6, 2): 4
Distance from target shape to gray trapezoid at (5, 5): 2
Closest shape is the gray trapezoid at (5, 5) with distance 2</think>

<answer>(5, 5)</answer>