Question: what is the capital city of northern island
[{'answer': 'Belfast', 'provenance': [{'wikipedia_id': '21265', 'title': 'Northern Ireland', 'start_paragraph_id': 8, 'start_character': 1440, 'end_paragraph_id': 8, 'end_character': 1447, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]