Question: what does the emu and kangaroo represent on the coat of arms
[{'answer': 'a nation moving forward', 'provenance': [{'wikipedia_id': '457015', 'title': 'Coat of arms of Australia', 'start_paragraph_id': 6, 'start_character': 421, 'end_paragraph_id': 6, 'end_character': 444, 'bleu_score': 1.0, 'section': 'Section::::Design.\n'}]}, {'provenance': [{'wikipedia_id': '457015', 'title': 'Coat of arms of Australia', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 609, 'bleu_score': 0.9559054761834711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17017634864026209507}, 'section': 'Section::::Design.\n'}]}]