Question: when did peru last qualify for world cup
[{'answer': '2018', 'provenance': [{'wikipedia_id': '21246594', 'title': 'Peru at the FIFA World Cup', 'start_paragraph_id': 4, 'start_character': 63, 'end_paragraph_id': 4, 'end_character': 67, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]