Question: the second largest party in the house of commons is usually known by what name
[{'answer': 'Leader of the Opposition', 'provenance': [{'wikipedia_id': '13828', 'title': 'House of Commons of the United Kingdom', 'start_paragraph_id': 7, 'start_character': 538, 'end_paragraph_id': 7, 'end_character': 562, 'bleu_score': 1.0, 'section': "Section::::Role.:Relationship with Her Majesty's Government.\n"}]}, {'provenance': [{'wikipedia_id': '13828', 'title': 'House of Commons of the United Kingdom', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 684, 'bleu_score': 0.7983003563894011, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8754869994409500047}, 'section': "Section::::Role.:Relationship with Her Majesty's Government.\n"}]}]