Question: when did the chinese first use fingerprint as identification
[{'answer': 'second millennium BCE'}, {'provenance': [{'wikipedia_id': '84777', 'title': 'Fingerprint', 'start_paragraph_id': 61, 'start_character': 0, 'end_paragraph_id': 61, 'end_character': 600, 'bleu_score': 0.5076369549733251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3639597027502228036}, 'section': 'Section::::History.:Antiquity and the medieval period.\n'}]}]