Question: when was the last time northern ireland were in the world cup
[{'answer': '1986', 'provenance': [{'wikipedia_id': '26224333', 'title': 'Northern Ireland at the FIFA World Cup', 'start_paragraph_id': 7, 'start_character': 7, 'end_paragraph_id': 7, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]