Question: who controlled vietnam for more than a thousand years
[{'answer': 'Chinese', 'provenance': [{'wikipedia_id': '38163162', 'title': 'Chinese domination of Vietnam', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '38163162', 'title': 'Chinese domination of Vietnam', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 458, 'bleu_score': 0.828829173685186, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1687875763107878217}, 'section': 'Section::::Abstract.'}]}]