Question: who signed the treaty of waitangi on behalf of the crown
[{'answer': 'Representatives', 'provenance': [{'wikipedia_id': '127254', 'title': 'Treaty of Waitangi', 'start_paragraph_id': 1, 'start_character': 73, 'end_paragraph_id': 1, 'end_character': 88, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]