Question: who supported north vietnam in the vietnam war
[{'answer': 'the Soviet Union', 'provenance': [{'wikipedia_id': '23550210', 'title': 'North Vietnam', 'start_paragraph_id': 5, 'start_character': 246, 'end_paragraph_id': 5, 'end_character': 262, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'China', 'provenance': [{'wikipedia_id': '23550210', 'title': 'North Vietnam', 'start_paragraph_id': 5, 'start_character': 267, 'end_paragraph_id': 5, 'end_character': 272, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23550210', 'title': 'North Vietnam', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 929, 'bleu_score': 0.8852547442482851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7109444213552887461}, 'section': 'Section::::Abstract.'}]}]