There are 5 shapes on a 8x8 grid. Which shape is closest to the orange 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: orange trapezoid at (2, 1)
Distance from target shape to green square at (2, 4): 3
Distance from target shape to yellow square at (1, 6): 6
Distance from target shape to gray trapezoid at (6, 3): 6
Distance from target shape to brown trapezoid at (7, 3): 7
Closest shape is the green square at (2, 4) with distance 3</think>

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