Question: where is the patella located in the human body
[{'answer': 'surface of the knee joint', 'provenance': [{'wikipedia_id': '309891', 'title': 'Patella', 'start_paragraph_id': 1, 'start_character': 169, 'end_paragraph_id': 1, 'end_character': 194, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '309891', 'title': 'Patella', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 301, 'bleu_score': 0.913499617140693, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15092960656968352322}, 'section': 'Section::::Abstract.'}]}]