There are 6 shapes on a 10x10 grid. Which shape is closest to the yellow 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: yellow rectangle at (4, 2)
Distance from target shape to orange right_triangle at (1, 7): 8
Distance from target shape to green trapezoid at (4, 6): 4
Distance from target shape to blue rectangle at (7, 4): 5
Distance from target shape to purple trapezoid at (4, 9): 7
Distance from target shape to brown rectangle at (2, 6): 6
Closest shape is the green trapezoid at (4, 6) with distance 4</think>

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