Question: what did april and jacksons baby die from
[{'answer': 'Osteogenesis Imperfecta type 2', 'provenance': [{'wikipedia_id': '27660054', 'title': 'April Kepner', 'start_paragraph_id': 10, 'start_character': 120, 'end_paragraph_id': 10, 'end_character': 150, 'bleu_score': 1.0, 'section': 'Section::::Storylines.\n'}]}]