Question: which end of the femur forms part of the knee
[{'answer': 'distal part of the femur', 'provenance': [{'wikipedia_id': '188497', 'title': 'Femur', 'start_paragraph_id': 1, 'start_character': 223, 'end_paragraph_id': 1, 'end_character': 247, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '188497', 'title': 'Femur', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 425, 'bleu_score': 0.5233682125156031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8511797564247216251}, 'section': 'Section::::Abstract.'}]}]