Question: The year that the film "Paulina" won the Cannes Film Festival Nespresso Grand Prize, who were the Presidents of the Jury for the main competition?
{'answer': 'Joel and Ethan Coen', 'supporting_facts': [['Paulina (film)', 0], ['Paulina (film)', 1], ['2015 Cannes Film Festival', 0], ['2015 Cannes Film Festival', 1]]}