Question: what is the unit of currency in northern ireland
[{'answer': 'pound sterling', 'provenance': [{'wikipedia_id': '270673', 'title': 'Pound sterling', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '270673', 'title': 'Pound sterling', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 878, 'bleu_score': 0.8240047572830871, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4083958491913924104}, 'section': 'Section::::Abstract.'}]}]