Question: when has china qualified for the world cup
[{'answer': '2002', 'provenance': [{'wikipedia_id': '17739032', 'title': 'China at the FIFA World Cup', 'start_paragraph_id': 1, 'start_character': 278, 'end_paragraph_id': 1, 'end_character': 282, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]