There are 2 shapes on a 4x4 grid. Which shape is closest to the green 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: green trapezoid at (1, 1)
Distance from target shape to purple square at (3, 3): 4
Closest shape is the purple square at (3, 3) with distance 4</think>

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