There are 5 shapes on a 9x9 grid. Which shape is closest to the cyan 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: cyan rectangle at (8, 4)
Distance from target shape to pink rectangle at (5, 1): 6
Distance from target shape to red right_triangle at (5, 2): 5
Distance from target shape to yellow trapezoid at (2, 7): 9
Distance from target shape to gray right_triangle at (2, 4): 6
Closest shape is the red right_triangle at (5, 2) with distance 5</think>

<answer>(5, 2)</answer>