Question: when was the last time eagles were in the superbowl
[{'answer': 'Super Bowl LII', 'provenance': [{'wikipedia_id': '685010', 'title': 'Super Bowl XXXIX', 'start_paragraph_id': 72, 'start_character': 314, 'end_paragraph_id': 72, 'end_character': 328, 'bleu_score': 1.0, 'section': 'Section::::Game summary.:Statistical overview.\n'}]}]