There are 2 shapes on a 4x4 grid. Which shape is closest to the orange rectangle 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 rectangle at (3, 1)
Distance from target shape to gray trapezoid at (0, 0): 4
Closest shape is the gray trapezoid at (0, 0) with distance 4</think>

<answer>(0, 0)</answer>