Question: how long have fall out boy been together
[{'answer': 'formed in 2001', 'provenance': [{'wikipedia_id': '14498090', 'title': 'Fall Out Boy', 'start_paragraph_id': 6, 'start_character': 17, 'end_paragraph_id': 6, 'end_character': 31, 'bleu_score': 1.0, 'section': 'Section::::History.:2001–2002: Early years.\n'}]}, {'provenance': [{'wikipedia_id': '14498090', 'title': 'Fall Out Boy', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 1600, 'bleu_score': 0.9923223148404691, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13410646285636031570}, 'section': 'Section::::History.:2001–2002: Early years.\n'}]}]