Question: when did the saber tooth tiger go extinct
[{'answer': '10,000 years ago', 'provenance': [{'wikipedia_id': '169071', 'title': 'Smilodon', 'start_paragraph_id': 1, 'start_character': 346, 'end_paragraph_id': 1, 'end_character': 362, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '169071', 'title': 'Smilodon', 'start_paragraph_id': 1, 'start_character': 12, 'end_paragraph_id': 1, 'end_character': 753, 'bleu_score': 0.8278605822020061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 856183493795928276}, 'section': 'Section::::Abstract.'}]}]