Question: when did the first afghan cameleers arrive in australia
[{'answer': 'June 1860', 'provenance': [{'wikipedia_id': '15589320', 'title': 'Afghan cameleers in Australia', 'start_paragraph_id': 6, 'start_character': 169, 'end_paragraph_id': 6, 'end_character': 178, 'bleu_score': 1.0, 'section': 'Section::::History.:Beginnings.\n'}]}]