Question: how many sinn fein mps in northern ireland
[{'answer': '7', 'provenance': [{'wikipedia_id': '4123629', 'title': 'List of Sinn Féin MPs', 'start_paragraph_id': 20, 'start_character': 26, 'end_paragraph_id': 20, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::MPs elected in 1918.\n'}]}]