Question: primary neurulation begins in response to signals released by cells in the
[{'answer': 'neural plate', 'provenance': [{'wikipedia_id': '1035621', 'title': 'Neurulation', 'start_paragraph_id': 1, 'start_character': 106, 'end_paragraph_id': 1, 'end_character': 118, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1035621', 'title': 'Neurulation', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 890, 'bleu_score': 0.9860618656782161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14391319108250882658}, 'section': 'Section::::Primary neurulation.:Shape change.\n'}]}]