Question: when was the social class system in latin america created
[{'answer': 'the sixteenth century', 'provenance': [{'wikipedia_id': '1069952', 'title': 'Casta', 'start_paragraph_id': 19, 'start_character': 3, 'end_paragraph_id': 19, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Castas.\n'}]}, {'provenance': [{'wikipedia_id': '1069952', 'title': 'Casta', 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 671, 'bleu_score': 0.9550237800704321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14257465160585565332}, 'section': 'Section::::Castas.\n'}]}]