Question: when did china receive most favored nation status
[{'answer': '1980', 'provenance': [{'wikipedia_id': '381424', 'title': 'Most favoured nation', 'start_paragraph_id': 24, 'start_character': 109, 'end_paragraph_id': 24, 'end_character': 113, 'bleu_score': 1.0, 'section': "Section::::Specific countries' policies.:United States.\n"}]}, {'provenance': [{'wikipedia_id': '381424', 'title': 'Most favoured nation', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 1189, 'bleu_score': 0.9294746337011561, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10181645461210206028}, 'section': "Section::::Specific countries' policies.:United States.\n"}]}]