Question: where does reabsorption of sodium and chloride ions occur
[{'answer': 'the proximal tubule', 'provenance': [{'wikipedia_id': '14786716', 'title': 'Renal sodium reabsorption', 'start_paragraph_id': 4, 'start_character': 41, 'end_paragraph_id': 4, 'end_character': 60, 'bleu_score': 1.0, 'section': 'Section::::Proximal tubule.\n'}]}, {'provenance': [{'wikipedia_id': '14786716', 'title': 'Renal sodium reabsorption', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 582, 'bleu_score': 0.9788329837059241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3711242473647533330}, 'section': 'Section::::Proximal tubule.\n'}]}]