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

<answer>(0, 1)</answer>