Question: when did fireworks on sydney harbour bridge start
[{'answer': '1976', 'provenance': [{'wikipedia_id': '15104323', 'title': "Sydney New Year's Eve", 'start_paragraph_id': 7, 'start_character': 3, 'end_paragraph_id': 7, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::History.:Origins.\n'}]}, {'provenance': [{'wikipedia_id': '15104323', 'title': "Sydney New Year's Eve", 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 681, 'bleu_score': 0.9542174745769371, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11384509168778449718}, 'section': 'Section::::History.:Origins.\n'}]}]