There are 6 shapes on a 7x7 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 (5, 0)
Distance from target shape to blue right_triangle at (2, 6): 9
Distance from target shape to pink rectangle at (1, 2): 6
Distance from target shape to purple square at (5, 1): 1
Distance from target shape to green square at (5, 6): 6
Distance from target shape to yellow square at (6, 6): 7
Closest shape is the purple square at (5, 1) with distance 1</think>

<answer>(5, 1)</answer>