Question: when did the polynesians first arrived in new zealand
[{'answer': 'around 1280 CE'}, {'provenance': [{'wikipedia_id': '39938', 'title': 'History of New Zealand', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 763, 'bleu_score': 0.956594673454308, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1136905163656787908}, 'section': 'Section::::Māori arrival and settlement.\n'}]}]