Question: when did peru last play in 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.'}]}, {'provenance': [{'wikipedia_id': '21246594', 'title': 'Peru at the FIFA World Cup', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 131, 'bleu_score': 0.9021315316859231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17143931416858476903}, 'section': 'Section::::Abstract.'}]}]