There are 5 shapes on a 10x10 grid. Which shape is closest to the red 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: red rectangle at (5, 9)
Distance from target shape to brown trapezoid at (4, 8): 2
Distance from target shape to yellow trapezoid at (5, 0): 9
Distance from target shape to blue trapezoid at (3, 3): 8
Distance from target shape to orange square at (7, 3): 8
Closest shape is the brown trapezoid at (4, 8) with distance 2</think>

<answer>(4, 8)</answer>