Question: who has veto power in the united nations
[{'answer': 'China', 'provenance': [{'wikipedia_id': '1900272', 'title': 'United Nations Security Council veto power', 'start_paragraph_id': 12, 'start_character': 253, 'end_paragraph_id': 12, 'end_character': 258, 'bleu_score': 1.0, 'section': 'Section::::Origins.\n'}]}, {'answer': 'France', 'provenance': [{'wikipedia_id': '1900272', 'title': 'United Nations Security Council veto power', 'start_paragraph_id': 16, 'start_character': 358, 'end_paragraph_id': 16, 'end_character': 364, 'bleu_score': 1.0, 'section': 'Section::::Usage of the veto.:History.\n'}]}, {'answer': 'Russia', 'provenance': [{'wikipedia_id': '1900272', 'title': 'United Nations Security Council veto power', 'start_paragraph_id': 18, 'start_character': 20, 'end_paragraph_id': 18, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Usage of the veto.:History.\n'}]}, {'answer': 'United Kingdom', 'provenance': [{'wikipedia_id': '1900272', 'title': 'United Nations Security Council veto power', 'start_paragraph_id': 12, 'start_character': 233, 'end_paragraph_id': 12, 'end_character': 247, 'bleu_score': 1.0, 'section': 'Section::::Origins.\n'}]}, {'answer': 'United States', 'provenance': [{'wikipedia_id': '1900272', 'title': 'United Nations Security Council veto power', 'start_paragraph_id': 12, 'start_character': 204, 'end_paragraph_id': 12, 'end_character': 217, 'bleu_score': 1.0, 'section': 'Section::::Origins.\n'}]}]