Question: when was the anti discrimination act introduced in australia
[{'answer': '1 June 1977', 'provenance': [{'wikipedia_id': '11283798', 'title': 'Anti-Discrimination Act 1977', 'start_paragraph_id': 13, 'start_character': 74, 'end_paragraph_id': 13, 'end_character': 85, 'bleu_score': 1.0, 'section': 'Section::::Development of the NSW Anti-Discrimination Act 1977.\n'}]}]