Question: when was the poem then and now written
[{'answer': '1970', 'provenance': [{'wikipedia_id': '1114702', 'title': 'Oodgeroo Noonuccal', 'start_paragraph_id': 24, 'start_character': 72, 'end_paragraph_id': 24, 'end_character': 76, 'bleu_score': 1.0, 'section': 'Section::::Recognition.\n'}]}]