There are 5 shapes on a 8x8 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 (6, 7)
Distance from target shape to purple square at (5, 2): 6
Distance from target shape to blue trapezoid at (6, 2): 5
Distance from target shape to green trapezoid at (2, 1): 10
Distance from target shape to brown trapezoid at (7, 1): 7
Closest shape is the blue trapezoid at (6, 2) with distance 5</think>

<answer>(6, 2)</answer>