Question: when was the policy of multiculturalism introduced in australia
[{'answer': '1973', 'provenance': [{'wikipedia_id': '24083956', 'title': 'Multiculturalism in Australia', 'start_paragraph_id': 8, 'start_character': 150, 'end_paragraph_id': 8, 'end_character': 154, 'bleu_score': 1.0, 'section': 'Section::::History.:White Australia policy: 1800s to 1972.\n'}]}, {'provenance': [{'wikipedia_id': '24083956', 'title': 'Multiculturalism in Australia', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 587, 'bleu_score': 0.9506883687855321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13081254310863741153}, 'section': 'Section::::History.:Multiculturalism adopted: 1970s - Present.\n'}]}]