Question: when was the last federal gun law passed
[{'answer': '2005', 'provenance': [{'wikipedia_id': '9663177', 'title': 'Gun law in the United States', 'start_paragraph_id': 30, 'start_character': 3, 'end_paragraph_id': 30, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]