There are 3 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 (4, 6)
Distance from target shape to orange trapezoid at (8, 7): 5
Distance from target shape to cyan right_triangle at (8, 4): 6
Closest shape is the orange trapezoid at (8, 7) with distance 5</think>

<answer>(8, 7)</answer>