There are 6 shapes on a 8x8 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, 3)
Distance from target shape to orange trapezoid at (2, 1): 5
Distance from target shape to gray rectangle at (7, 6): 5
Distance from target shape to red square at (2, 5): 5
Distance from target shape to purple trapezoid at (3, 0): 5
Distance from target shape to blue trapezoid at (3, 3): 2
Closest shape is the blue trapezoid at (3, 3) with distance 2</think>

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