Task: Question Answering
Input (English): Not until I drove to " No Man's Land " , a smugglers haven between the border of Pakistan and Afghanistan , that is . We stopped here to order some supplies for a food aid project . After about 5 minutes of waiting , a boy who had noticed me came up to the my driver who was still in the passenger seat talking animatedly in Pashto , the main local language in the area . My driver looked at me , smiled and responded to the boy , who then turned around and called other boys to come up to the van . 
Question: Why did the boy call other boys to come to the van ?
Output (English): The writer's group needed to buy supplies