Question: who was the pinkerton detective agency's first female detective
[{'answer': 'Kate Warne', 'provenance': [{'wikipedia_id': '13899702', 'title': 'Kate Warne', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '13899702', 'title': 'Kate Warne', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 133, 'bleu_score': 0.910879922930628, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13939247266108964303}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '13899702', 'title': 'Kate Warne', 'section': 'Section::::Pre–Civil War.:Early detective work: 1856-1861.\n', 'start_paragraph_id': 4, 'end_paragraph_id': 4, 'meta': {'evidence_span': ['Kate Warne (1833 January 28, 1868) was the first female detective, in 1856, in the Pinkerton Detective Agency and the United States.', 'Kate Warne (1833 January 28, 1868) was the first female detective, in 1856, in the Pinkerton Detective Agency and the United States', 'Kate Warne (1833 January 28, 1868) was the first female detective, in 1856, in the Pinkerton Detective Agency and the United States.']}}]}, {'provenance': [{'wikipedia_id': '62125', 'title': 'Private investigator', 'section': 'Section::::History.\n', 'start_paragraph_id': 6, 'end_paragraph_id': 6, 'meta': {'evidence_span': ['Allan Pinkerton hired Kate Warne in 1856 as a private detective, making her the first female private detective in America.', 'Kate Warne in 1856 as a private detective, making her the first female private detective in America.', 'Allan Pinkerton hired Kate Warne in 1856 as a private detective']}}]}]