Question: who is lead singer of fall out boy
[{'answer': 'Patrick Stump', 'provenance': [{'wikipedia_id': '14498090', 'title': 'Fall Out Boy', 'start_paragraph_id': 1, 'start_character': 154, 'end_paragraph_id': 1, 'end_character': 167, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14498090', 'title': 'Fall Out Boy', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 889, 'bleu_score': 0.9636095698531311, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1044637578617856560}, 'section': 'Section::::Abstract.'}]}]