There are 5 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 (2, 1)
Distance from target shape to brown trapezoid at (1, 0): 2
Distance from target shape to yellow square at (2, 2): 1
Distance from target shape to blue square at (0, 1): 2
Distance from target shape to gray trapezoid at (3, 2): 2
Closest shape is the yellow square at (2, 2) with distance 1</think>

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