Question: when did ireland secede from the united kingdom
[{'answer': '1922', 'provenance': [{'wikipedia_id': '152256', 'title': 'United Kingdom of Great Britain and Ireland', 'start_paragraph_id': 4, 'start_character': 173, 'end_paragraph_id': 4, 'end_character': 177, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]