Context: What fine day today ! The sky is blue with white clouds . The wind is blowing and has blown away the haze lingered in the sky . It has finally cleared up .
Question: What may the wind have removed from the area ?
Option 0: The wind removed some people .
Option 1: The wind removed some birds .
Option 2: The wind removed some pollution .
Option 3: None of the above choices .
Answer: 2