There are 5 shapes on a 10x10 grid. Which shape is closest to the red square 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 square at (9, 7)
Distance from target shape to green trapezoid at (7, 5): 4
Distance from target shape to cyan right_triangle at (3, 9): 8
Distance from target shape to yellow rectangle at (8, 6): 2
Distance from target shape to blue rectangle at (7, 3): 6
Closest shape is the yellow rectangle at (8, 6) with distance 2</think>

<answer>(8, 6)</answer>