A picture taken on January 11, 2017 shows an abandoned building, used ocassionally by homeless people, at the former Helliniko airport area in an Athens southern suburb on January 11, 2017 A cold snap gripping Europe has killed more than 30 people in recent days, left thousands of travellers stranded in snow- covered Turkey and brought fresh misery for migrants and the homeless. (Photo by Louisa Gouliamaki/AFP Photo)
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