Question: how does d-tubocurarine act as a muscle relaxant
[{'answer': 'activating', 'provenance': [{'wikipedia_id': '2472170', 'title': 'Tubocurarine chloride', 'start_paragraph_id': 18, 'start_character': 607, 'end_paragraph_id': 18, 'end_character': 617, 'bleu_score': 1.0, 'section': 'Section::::Biological effects.:Clinical pharmacology.\n'}]}, {'provenance': [{'wikipedia_id': '2472170', 'title': 'Tubocurarine chloride', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 656, 'bleu_score': 0.9788329837059241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11830409517406880272}, 'section': 'Section::::Biological effects.:Clinical pharmacology.\n'}]}]