Question: the neurotransmitter that is active at the neuromuscular junction is
[{'answer': 'acetylcholine', 'provenance': [{'wikipedia_id': '681908', 'title': 'Neuromuscular junction', 'start_paragraph_id': 2, 'start_character': 716, 'end_paragraph_id': 2, 'end_character': 729, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '681908', 'title': 'Neuromuscular junction', 'start_paragraph_id': 2, 'start_character': 202, 'end_paragraph_id': 2, 'end_character': 1154, 'bleu_score': 0.876927711455567, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10039457285145157820}, 'section': 'Section::::Abstract.'}]}]