Question: the function of the neuromuscular junction is to
[{'answer': 'causing muscle contraction', 'provenance': [{'wikipedia_id': '681908', 'title': 'Neuromuscular junction', 'start_paragraph_id': 1, 'start_character': 242, 'end_paragraph_id': 1, 'end_character': 268, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '681908', 'title': 'Neuromuscular junction', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 268, 'bleu_score': 0.9560167778278961, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9601802790133003142}, 'section': 'Section::::Abstract.'}]}]