Question: who is the person that shot up las vegas
[{'answer': 'Stephen Paddock', 'provenance': [{'wikipedia_id': '55414735', 'title': '2017 Las Vegas shooting', 'start_paragraph_id': 2, 'start_character': 33, 'end_paragraph_id': 2, 'end_character': 48, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]