Question: what is an ocd lesion of the knee
[{'answer': 'Osteochondritis dissecans', 'provenance': [{'wikipedia_id': '3762029', 'title': 'Osteochondritis dissecans', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3762029', 'title': 'Osteochondritis dissecans', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 348, 'bleu_score': 0.96188712955549, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12006105957554795581}, 'section': 'Section::::Abstract.'}]}]