Question: who is the leader of the national party in nz
[{'answer': 'Bill English', 'provenance': [{'wikipedia_id': '333149', 'title': 'New Zealand National Party', 'start_paragraph_id': 4, 'start_character': 88, 'end_paragraph_id': 4, 'end_character': 100, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]