There are 4 shapes on a 10x10 grid. Which shape is closest to the blue 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: blue rectangle at (4, 2)
Distance from target shape to purple square at (9, 2): 5
Distance from target shape to brown trapezoid at (5, 3): 2
Distance from target shape to yellow rectangle at (8, 9): 11
Closest shape is the brown trapezoid at (5, 3) with distance 2</think>

<answer>(5, 3)</answer>