Question: what are the four main political parties in australia
[{'answer': 'Liberal Party of Australia'}, {'answer': 'National Party of Australia'}, {'answer': 'Australian Labor Party', 'provenance': [{'wikipedia_id': '396356', 'title': 'List of political parties in Australia', 'start_paragraph_id': 3, 'start_character': 117, 'end_paragraph_id': 3, 'end_character': 139, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Liberal National Party ( QLD )'}]