Question: when did the first indentured servants came to america
[{'answer': '1630s', 'provenance': [{'wikipedia_id': '327044', 'title': 'Indentured servitude', 'start_paragraph_id': 7, 'start_character': 89, 'end_paragraph_id': 7, 'end_character': 94, 'bleu_score': 1.0, 'section': 'Section::::The Americas.:North America.\n'}]}, {'provenance': [{'wikipedia_id': '327044', 'title': 'Indentured servitude', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 1210, 'bleu_score': 0.989924111967827, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5739335025302371286}, 'section': 'Section::::The Americas.:North America.\n'}]}]