There are 3 shapes on a 8x8 grid. Which shape is closest to the cyan trapezoid 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 trapezoid at (1, 6)
Distance from target shape to gray rectangle at (1, 1): 5
Distance from target shape to red square at (2, 4): 3
Closest shape is the red square at (2, 4) with distance 3</think>

<answer>(2, 4)</answer>