Question: list of nfl teams never to win a superbowl
[{'answer': 'Arizona Cardinals'}, {'answer': 'Detroit Lions'}, {'answer': 'Philadelphia Eagles'}, {'answer': 'Tennessee Titans'}, {'answer': 'Los Angeles Chargers', 'provenance': [{'wikipedia_id': '1345171', 'title': 'List of NFL franchise post-season droughts', 'start_paragraph_id': 14, 'start_character': 16, 'end_paragraph_id': 14, 'end_character': 36, 'bleu_score': 1.0, 'section': 'Section::::Active team droughts.:AFC/NFC Championship game appearance droughts.\n'}]}, {'answer': 'Buffalo Bills'}, {'answer': 'Cleveland Browns', 'provenance': [{'wikipedia_id': '1345171', 'title': 'List of NFL franchise post-season droughts', 'start_paragraph_id': 4, 'start_character': 39, 'end_paragraph_id': 4, 'end_character': 55, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Minnesota Vikings'}, {'answer': 'Atlanta Falcons'}, {'answer': 'Cincinnati Bengals'}]