Question: who tried to kill bart bass in gossip girl
[{'answer': 'Chuck', 'provenance': [{'wikipedia_id': '6311352', 'title': 'Chuck Bass', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 5, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6311352', 'title': 'Chuck Bass', 'start_paragraph_id': 47, 'start_character': 0, 'end_paragraph_id': 47, 'end_character': 402, 'bleu_score': 0.974188104609039, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8237120263266555299}, 'section': 'Section::::TV series.:Season 6.\n'}]}]