Question: when is the last time argentina did not qualify for the world cup
[{'answer': '1970', 'provenance': [{'wikipedia_id': '16966712', 'title': 'Argentina at the FIFA World Cup', 'start_paragraph_id': 77, 'start_character': 183, 'end_paragraph_id': 77, 'end_character': 187, 'bleu_score': 1.0, 'section': 'Section::::Records and statistics.:Shared.\n'}]}]