Question: what is the most common last name in ireland
[{'answer': 'Murphy', 'provenance': [{'wikipedia_id': '26810032', 'title': 'List of most common surnames in Europe', 'start_paragraph_id': 290, 'start_character': 14, 'end_paragraph_id': 290, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::United Kingdom.:Northern Ireland.\n'}]}]