Question: where is the femur bone located in the leg
[{'answer': 'thigh', 'provenance': [{'wikipedia_id': '13659135', 'title': 'Leg bone', 'start_paragraph_id': 2, 'start_character': 36, 'end_paragraph_id': 2, 'end_character': 41, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]