There are 5 shapes on a 6x6 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 (3, 1)
Distance from target shape to yellow rectangle at (0, 3): 5
Distance from target shape to cyan trapezoid at (5, 2): 3
Distance from target shape to pink square at (4, 0): 2
Distance from target shape to blue trapezoid at (2, 1): 1
Closest shape is the blue trapezoid at (2, 1) with distance 1</think>

<answer>(2, 1)</answer>