Question: when was new zealand part of the british empire
[{'answer': '1840', 'provenance': [{'wikipedia_id': '5472856', 'title': 'Independence of New Zealand', 'start_paragraph_id': 2, 'start_character': 111, 'end_paragraph_id': 2, 'end_character': 115, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5472856', 'title': 'Independence of New Zealand', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 900, 'bleu_score': 0.9866213202385071, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8882009622164128001}, 'section': 'Section::::Abstract.'}]}]