Question: when was the democratic republic of vietnam founded
[{'answer': '1945', 'provenance': [{'wikipedia_id': '23550210', 'title': 'North Vietnam', 'start_paragraph_id': 1, 'start_character': 108, 'end_paragraph_id': 1, 'end_character': 112, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]