Question: form of passive transport that uses transport proteins
[{'answer': 'Facilitated diffusion', 'provenance': [{'wikipedia_id': '417014', 'title': 'Passive transport', 'start_paragraph_id': 6, 'start_character': 11, 'end_paragraph_id': 6, 'end_character': 32, 'bleu_score': 1.0, 'section': 'Section::::Diffusion.\n'}]}]