There are 4 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 (1, 1)
Distance from target shape to red rectangle at (3, 0): 3
Distance from target shape to purple trapezoid at (1, 4): 3
Distance from target shape to brown square at (2, 3): 3
Closest shape is the red rectangle at (3, 0) with distance 3</think>

<answer>(3, 0)</answer>