Question: u.s. ambassador killed in the line of duty
[{'answer': 'John Christopher Stevens', 'provenance': [{'wikipedia_id': '36993318', 'title': 'J. Christopher Stevens', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '36993318', 'title': 'J. Christopher Stevens', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 326, 'bleu_score': 0.8657808462670441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13665810889726254828}, 'section': 'Section::::Abstract.'}]}]