Question: who is responsible for the bombing in quantico
[{'answer': "supervising training agent Liam O'Connor", 'provenance': [{'wikipedia_id': '50715365', 'title': 'Quantico (season 1)', 'start_paragraph_id': 6, 'start_character': 509, 'end_paragraph_id': 6, 'end_character': 549, 'bleu_score': 1.0, 'section': 'Section::::Overview.\n'}]}, {'answer': 'former FBI analyst - trainee Elias Harper'}, {'provenance': [{'wikipedia_id': '50715365', 'title': 'Quantico (season 1)', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 874, 'bleu_score': 0.986253478180058, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 950629290242626314}, 'section': 'Section::::Overview.\n'}]}]