Question: when was the last time the eagles won the superball
[{'answer': '2018', 'provenance': [{'wikipedia_id': '2898735', 'title': 'History of the Philadelphia Eagles', 'start_paragraph_id': 1, 'start_character': 193, 'end_paragraph_id': 1, 'end_character': 197, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2898735', 'title': 'History of the Philadelphia Eagles', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 285, 'bleu_score': 0.958740481558872, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1776807800473421343}, 'section': 'Section::::Abstract.'}]}]