Question: the patellar knee jerk reflex is an example of
[{'answer': 'stretch reflex', 'provenance': [{'wikipedia_id': '1047057', 'title': 'Patellar reflex', 'start_paragraph_id': 1, 'start_character': 96, 'end_paragraph_id': 1, 'end_character': 110, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1047057', 'title': 'Patellar reflex', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 169, 'bleu_score': 0.929712191543383, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12558360943740683273}, 'section': 'Section::::Abstract.'}]}]