Question: when did northern ireland last qualify for the world cup
[{'answer': '2018', 'provenance': [{'wikipedia_id': '26224333', 'title': 'Northern Ireland at the FIFA World Cup', 'start_paragraph_id': 7, 'start_character': 167, 'end_paragraph_id': 7, 'end_character': 171, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '26224333', 'title': 'Northern Ireland at the FIFA World Cup', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 190, 'bleu_score': 0.9419661180380051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5402190936106179745}, 'section': 'Section::::Abstract.'}]}]