Question: when were footprints first used in forensic science
[{'answer': '1816', 'provenance': [{'wikipedia_id': '45710', 'title': 'Forensic science', 'start_paragraph_id': 17, 'start_character': 11, 'end_paragraph_id': 17, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::History.:Development of forensic science.\n'}]}, {'provenance': [{'wikipedia_id': '45710', 'title': 'Forensic science', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 493, 'bleu_score': 0.977397480575333, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3824740043817696902}, 'section': 'Section::::History.:Development of forensic science.\n'}]}]