There are 5 shapes on a 9x9 grid. Which shape is closest to the cyan 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: cyan square at (4, 6)
Distance from target shape to pink rectangle at (5, 2): 5
Distance from target shape to brown right_triangle at (7, 7): 4
Distance from target shape to gray trapezoid at (7, 8): 5
Distance from target shape to yellow trapezoid at (7, 0): 9
Closest shape is the brown right_triangle at (7, 7) with distance 4</think>

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