There are 6 shapes on a 10x10 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 (1, 1)
Distance from target shape to green rectangle at (9, 1): 8
Distance from target shape to purple right_triangle at (1, 4): 3
Distance from target shape to pink rectangle at (7, 1): 6
Distance from target shape to yellow right_triangle at (8, 6): 12
Distance from target shape to brown trapezoid at (9, 2): 9
Closest shape is the purple right_triangle at (1, 4) with distance 3</think>

<answer>(1, 4)</answer>